Fix errors encountered by CodeQL

[thaJeztah]

gha: CodeQL: move go.mod/go.sum symlink earlier to help caching

actions/setup-go was trying to use caching, and produced a warning
because it expects a go.mod / go.sum;

Run actions/setup-go@v5
  with:
    go-version: 1.21
    check-latest: false
    token: ***
    cache: true
  env:
    DISABLE_WARN_OUTSIDE_CONTAINER: 1
Setup go version spec 1.21
Found in cache @ /opt/hostedtoolcache/go/1.21.9/x64
Added go to the path
Successfully set up Go version 1.21
/opt/hostedtoolcache/go/1.21.9/x64/bin/go env GOMODCACHE
/opt/hostedtoolcache/go/1.21.9/x64/bin/go env GOCACHE
/home/runner/go/pkg/mod
/home/runner/.cache/go-build
Warning: Restore cache failed: Dependencies file is not found in /home/runner/work/cli/cli. Supported file pattern: go.sum
go version go1.21.9 linux/amd64

While our regular builds would use a containerised flow, CodeQL's autobuild
does not, and also doesn't seem to use our vendor directory (?) so for this
one it's probably fine to let it use some caching.

go.mod: use SemVer format for go version to assist CodeQL AutoBuild

CodeQL AutoBuild started to produce errors if the go.mod does not use
SemVer for the go version; https://github.com/github/codeql/blob/3a2b0a2feba58c05706c88b5589cacf6094f7f9d/go/extractor/diagnostics/diagnostics.go#L512-L525

Let's give it one.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 61.07%. Comparing base (e81b835) to head (e3216ca).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #5049   +/-   ##
=======================================
  Coverage   61.07%   61.07%           
=======================================
  Files         295      295           
  Lines       20667    20667           
=======================================
  Hits        12623    12623           
  Misses       7146     7146           
  Partials      898      898           

[thaJeztah]

Thx! FWIW; not 100% sure this will fix the issues, but it started to show errors / warnings, and looking at the logs, these were the ones that I found. It didn't fail though, so 🤷‍♂️

[thaJeztah]

Looks like there's still some warnings / errors; one of them looks to be related to #4624, which renamed the workflow file; I can try deleting the workflow from that page;

The other one is that it's still complaining about go files that it didn't analyse. Wondering if that's mac <--> windows, or something else;

[thaJeztah]

Hmm... right, so it shows more now on that page;

[thaJeztah]

And it provides a CSV to show what files were analysed and what ones weren't...
code-scanning-files-extracted.csv

And from the looks of it;

• it skips _test.go files
• it skips windows files

So not sure if (at least) _test.go files could be enabled for it (but it's funny that it's effectively imposing a penalty for having tests 😂), and don't know if it supports windows;