Release checklist

[codebien]

It adds a checklist for driving a new release.

[olegbespalov]

Added two things that I think should be also here. Generally LGTM 👍 But maybe @mstoykov has something to add since he has used the checklist recently, so the final decision postpone for him 👍

[codecov-commenter]

Codecov Report

Merging #3135 (79af51b) into master (9fdd569) will decrease coverage by 1.89%.
The diff coverage is 33.94%.

❗ Current head 79af51b differs from pull request most recent head 0318c1c. Consider uploading reports for the commit 0318c1c to get more accurate results

@@            Coverage Diff             @@
##           master    #3135      +/-   ##
==========================================
- Coverage   73.88%   72.00%   -1.89%     
==========================================
  Files         243      252       +9     
  Lines       18488    19405     +917     
==========================================
+ Hits        13660    13972     +312     
- Misses       3961     4540     +579     
- Partials      867      893      +26     

Flag	Coverage Δ
ubuntu	71.92% <33.94%> (-1.90%)	⬇️
windows	71.84% <33.94%> (-1.88%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
output/cloud/expv2/output.go	66.01% <5.12%> (-20.83%)	⬇️
cloudapi/insights/proto/v1/common/common.pb.go	15.20% <15.20%> (ø)
cloudapi/insights/proto/v1/ingester/ingester.pb.go	22.99% <22.99%> (ø)
cloudapi/insights/proto/v1/trace/span.pb.go	25.80% <25.80%> (ø)
...api/insights/proto/v1/ingester/ingester_grpc.pb.go	27.02% <27.02%> (ø)
cloudapi/insights/proto/v1/k6/labels.pb.go	27.47% <27.47%> (ø)
cloudapi/insights/proto/v1/trace/labels.pb.go	32.25% <32.25%> (ø)
...oudapi/insights/proto/v1/k6/request_metadata.pb.go	32.85% <32.85%> (ø)
cloudapi/insights/client.go	68.11% <68.11%> (ø)
cloudapi/insights/mappers.go	82.85% <82.85%> (ø)
... and 3 more

... and 2 files with indirect coverage changes

[codebien]

@olegbespalov I added the dependencies' bump inspired by your PR.

[olegbespalov]

I don't mind putting this as the responsibility of the release driver, but we should probably agree inside the team first that we put this onto the release driver person's shoulder.

[codebien]

Ok, let's use this PR to get the consensus. Are you (@grafana/k6-core) against moving here this responsibility?

[codebien]

We are not including the action to open a milestone but I expect it is done most of the time during the previous cycle, so I think we may skip it. If have a different opinion let me know.

[oleiade]

This is really great, much MUCH appreciated 🙇🏻 Thanks for doing this @codebien 👏🏻