go.mod: don't enforce latest go version

[thaJeztah]

• relates to chore: upgrade golang to 1.26 #344

Commit e9d8229 updated the version of go to use for this module, but also updated the go directive in go.mod, preventing users of this module to use lower versions.

For modules used as library, Go generally recommends supporting at least the current stable and "oldstable" (stable -1) releases.

This patch:

• downgrades the go directive in go.mod to go1.25
• updates github actions workflows to test both the specified version (1.26) and the version specified in go.mod (minimal version).

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

Please check the following list:

• Does the affected code have corresponding tests, e.g. unit test, E2E test?
• Does this change require a documentation update?
• Does this introduce breaking changes that would require an announcement or bumping the major version?
• Do all new files have an appropriate license header?

[thaJeztah]

Added two commits;

• first commit removes the GOPATH handling (repo is a module now, so shouldn't require a specific path
• third commit switches the tests that are ran as root to only run the tests as root (through go test -exec sudo ), instead of running the make target as root (which runs both make and go as root, so including building the test binaries).

[thaJeztah]

Hm.. yeah, CodeQL looks to be correct; probably best to add permissions as well

I also think I should add GOTOOLCHAIN=local to prevent Go from implicitly upgrading Go versions; let me update

[BigVan]

@chewi PTAL :D

[chewi]

I'm not familiar with the CI bits, but simply changing go.mod was enough for us.

[thaJeztah]

Yeah, I noticed as well that the release workflow uses a third-party archived / unmaintained action; probably should be looked at to replace it with something maintained (or the gh CLI, but that can be slightly more "finicky" to set up);

accelerated-container-image/.github/workflows/release.yml

Lines 116 to 123 in 155d50b

	- name: Create Release
	uses: "marvinpinto/action-automatic-releases@latest"
	with:
	repo_token: "${{ secrets.GITHUB_TOKEN }}"
	prerelease: false
	files: |
	releases/*/overlaybd-snapshotter*
	releases/accelerated-container-image-*-vendor.tar.xz

☝️ that action looks to be archived in 2024; https://github.com/marvinpinto/action-automatic-releases