chore: Update Github issue templates

[alexec]

Checklist:

• Either (a) I've created an enhancement proposal and discussed it with the community, (b) this is a bug fix, or (c) this is a chore.
• The title of the PR is (a) conventional, (b) states what changed, and (c) suffixes the related issues number. E.g. "fix(controller): Updates such and such. Fixes #1234".
• I've signed the CLA.
• I have written unit and/or e2e tests for my change. PRs without these are unlikely to be merged.
• My builds are green. Try syncing with master if they are not.
• My organization is added to USERS.md.

[alexec]

Unrelated failure, maybe bug or flakey test?

2020-09-29T18:46:09.0493329Z --- FAIL: TestArgoServerSuite (37.70s)
2020-09-29T18:46:09.0494342Z     --- FAIL: TestArgoServerSuite/TestArchivedWorkflowService (4.12s)
2020-09-29T18:46:09.0498920Z ##[error]        argo_server_test.go:1142: workflows.argoproj.io "archie" not found