RELNOTES: add feature and build items

Relates to #5269 #6164.

RELNOTES

@@ -13,7 +13,7 @@ firejail (0.9.73) baseline; urgency=low
  #6153)
  * feature: expand simple macros in more commands (--chroot= --netfilter=
  --netfilter6= --trace=) (#6032 #6109)
- * feature: add Landlock support (#6078 #6115 #6125)
+ * feature: add Landlock support (#5269 #6078 #6115 #6125)
  * modif: Stop forwarding own double-dash to the shell (#5599 #5600)
  * modif: Prevent sandbox name (--name=) and host name (--hostname=)
  from containing only digits (#5578 #5741)
@@ -58,6 +58,7 @@ firejail (0.9.73) baseline; urgency=low
  * build: mkrpm.sh: append instead of override configure args (#6126)
  * build: use CPPFLAGS instead of INCLUDE in compile targets (#6159)
  * build: use full paths on compile/link targets (#6158)
+ * build: automatically generate header dependencies (#6164)
  * ci: always update the package db before installing packages (#5742)
  * ci: fix codeql unable to download its own bundle (#5783)
  * ci: split configure/build/install commands on gitlab (#5784)