CI tests intermittently failing

[graemedavidson]

Tests in CI failing when doing approx time comparisions for cache timing.

CI Run

=== RUN   TestGetUserList
    user_cache_test.go:237: 
        	Error Trace:	user_cache_test.go:237
        	Error:      	Not equal: 
        	            	expected: []main.userList{main.userList{Username:"test1", SlackUserID:"1", SlackStatus:"", CacheExpire:time.Date(2022, time.August, 3, 21, 20, 41, 0, time.Local), Expired:false}, main.userList{Username:"test2", SlackUserID:"2", SlackStatus:"", CacheExpire:time.Date(2021, time.August, 3, 13, 20, 41, 0, time.Local), Expired:true}}
        	            	actual  : []main.userList{main.userList{Username:"test2", SlackUserID:"2", SlackStatus:"", CacheExpire:time.Date(2021, time.August, 3, 13, 20, 41, 0, time.Local), Expired:true}, main.userList{Username:"test1", SlackUserID:"1", SlackStatus:"", CacheExpire:time.Date(2022, time.August, 3, 21, 20, 41, 0, time.Local), Expired:false}}
        	            	
        	            	Diff:
        	            	--- Expected
        	            	+++ Actual
        	            	@@ -1,2 +1,38 @@
        	            	 ([]main.userList) (len=2) {
        	            	+ (main.userList) {
        	            	+  Username: (string) (len=5) "test2",
        	            	+  SlackUserID: (string) (len=1) "2",
        	            	+  SlackStatus: (string) "",
        	            	+  CacheExpire: (time.Time) {
        	            	+   wall: (uint64) 0,
        	            	+   ext: (int64) [63](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:64)763593[64](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:65)1,
        	            	+   loc: (*time.Location)({
        	            	+    name: (string) (len=5) "Local",
        	            	+    zone: ([]time.zone) (len=1) {
        	            	+     (time.zone) {
        	            	+      name: (string) (len=3) "UTC",
        	            	+      offset: (int) 0,
        	            	+      isDST: (bool) false
        	            	+     }
        	            	+    },
        	            	+    tx: ([]time.zoneTrans) (len=1) {
        	            	+     (time.zoneTrans) {
        	            	+      when: (int64) -922337203[68](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:69)54775808,
        	            	+      index: (uint8) 0,
        	            	+      isstd: (bool) false,
        	            	+      isutc: (bool) false
        	            	+     }
        	            	+    },
        	            	+    extend: (string) (len=4) "UTC0",
        	            	+    cacheStart: (int64) 92233[72](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:73)0368547[75](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:76)807,
        	            	+    cacheEnd: (int64) 9223372036854775807,
        	            	+    cacheZone: (*time.zone)({
        	            	+     name: (string) (len=3) "UTC",
        	            	+     offset: (int) 0,
        	            	+     isDST: (bool) false
        	            	+    })
        	            	+   })
        	            	+  },
        	            	+  Expired: (bool) true
        	            	+ },
        	            	  (main.userList) {
        	            	@@ -36,38 +72,2 @@
        	            	   Expired: (bool) false
        	            	- },
        	            	- (main.userList) {
        	            	-  Username: (string) (len=5) "test2",
        	            	-  SlackUserID: (string) (len=1) "2",
        	            	-  SlackStatus: (string) "",
        	            	-  CacheExpire: (time.Time) {
        	            	-   wall: (uint64) 0,
        	            	-   ext: (int64) 63[76](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:77)3593641,
        	            	-   loc: (*time.Location)({
        	            	-    name: (string) (len=5) "Local",
        	            	-    zone: ([]time.zone) (len=1) {
        	            	-     (time.zone) {
        	            	-      name: (string) (len=3) "UTC",
        	            	-      offset: (int) 0,
        	            	-      isDST: (bool) false
        	            	-     }
        	            	-    },
        	            	-    tx: ([]time.zoneTrans) (len=1) {
        	            	-     (time.zoneTrans) {
        	            	-      when: (int64) -9223372036854[77](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:78)5[80](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:81)8,
        	            	-      index: (uint8) 0,
        	            	-      isstd: (bool) false,
        	            	-      isutc: (bool) false
        	            	-     }
        	            	-    },
        	            	-    extend: (string) (len=4) "UTC0",
        	            	-    cacheStart: (int64) 9223372036[85](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:86)4775807,
        	            	-    cacheEnd: (int64) [92](https://github.com/graemedavidson/gitlab-mr-bot/runs/7652796798?check_suite_focus=true#step:4:93)23372036854775807,
        	            	-    cacheZone: (*time.zone)({
        	            	-     name: (string) (len=3) "UTC",
        	            	-     offset: (int) 0,
        	            	-     isDST: (bool) false
        	            	-    })
        	            	-   })
        	            	-  },
        	            	-  Expired: (bool) true
        	            	  }
        	Test:       	TestGetUserList
--- FAIL: TestGetUserList (0.00s)