Version mismatch between flux version and update-checker

[BitProcessor]

Describe the bug

Version mismatch between Flux version and update-checker version

ts=2020-12-07T14:41:01.117494825Z caller=main.go:259 version=1.21.0
...
ts=2020-12-07T14:41:02.408813856Z caller=checkpoint.go:24 component=checkpoint msg="up to date" latest=1.20.1

To Reproduce
Install flux 1.21.0

[kingdonb]

I have an older version of Flux running somewhere and I can confirm, the update checker is outputting the wrong version to upgrade to in Flux v1.x

ts=2021-01-18T21:32:29.06877884Z caller=main.go:259 version=1.19.0
...
ts=2021-01-20T22:17:40.356923655Z caller=checkpoint.go:21 component=checkpoint msg="update available" latest=1.20.1 URL=https://github.com/fluxcd/flux/releases/tag/1.20.1

[kingdonb]

I suspect this is related to #3400 and it will resolve when that one is merged

[kingdonb]

I found the answer, and am working on the resolution for this today.

[kingdonb]

This is resolved now:

ts=2021-01-22T23:50:14.724327112Z caller=checkpoint.go:21 component=checkpoint msg="update available" latest=1.21.1 URL=https://github.com/fluxcd/flux/releases/tag/1.21.1

[kingdonb]

@BitProcessor can you see if the update checkpoint code is returning a sensible release now; if so please go ahead and close this. Thanks for bringing this to our attention! I've also checked Helm Operator to ensure the latest release is being reported.

[BitProcessor]

ts=2021-01-26T19:08:18.924082067Z caller=main.go:259 version=1.21.1
...
ts=2021-01-26T19:08:19.309232596Z caller=checkpoint.go:24 component=checkpoint msg="up to date" latest=1.21.1

Looking good 👍