ci: use go.mod to determine go version (#3279)

Related to
#3229 (comment)

This PR replaces most fixed versions of Go in the CI workflows with
retrieving the version from the relevant go.mod file.

For workflows that do not have an associated go.mod file, the go.mod
file at the root of the repository is used. All `*_template.yml`
workflows seem designed to use a fixed version of go and do not allow
passing a go.mod file to the `setup-go` action. Achieving this would
require a more significant refactor.

<details><summary>Contributors' checklist...</summary>

- [ ] Added new tests, or not needed, or not feasible
- [ ] Provided an example (e.g. screenshot) to aid review or the PR is
self-explanatory
- [ ] Updated the official documentation or not needed
- [ ] No breaking changes were made, or a `BREAKING CHANGE: xxx` message
was included in the description
- [ ] Added references to related issues and PRs
- [ ] Provided any useful hints for running manual tests
</details>

Co-authored-by: Morgan <[email protected]>

.github/workflows/benchmark-master-push.yml

@@ -31,7 +31,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.22.x"
+          go-version-file: go.mod
 
       - name: Run benchmark
         # add more benchmarks by adding additional lines for different packages;

.github/workflows/dependabot-tidy.yml

@@ -20,7 +20,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v5
         with:
-          go-version: 1.22.x
+          go-version-file: go.mod
 
       - name: Tidy all Go mods
         env:

.github/workflows/docs.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: '1.22'
+          go-version-file: go.mod
 
       - name: Install dependencies
         run: go mod download

.github/workflows/genesis-verify.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version: "1.22"
+          go-version-file: contribs/gnogenesis/go.mod
 
       - name: Build gnogenesis
         run: make -C contribs/gnogenesis

.github/workflows/gh-pages.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.22.x"
+          go-version-file: go.mod
       - run: "cd misc/gendocs && make install gen"
       - uses: actions/configure-pages@v5
         id: pages

.github/workflows/releaser-master.yml

@@ -23,7 +23,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.22.x"
+          go-version-file: go.mod
           cache: true
 
       - uses: sigstore/[email protected]

.github/workflows/releaser-nightly.yml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.22.x"
+          go-version-file: go.mod
           cache: true
 
       - uses: sigstore/[email protected]

.github/workflows/releaser.yml

@@ -20,7 +20,7 @@ jobs:
 
       - uses: actions/setup-go@v5
         with:
-          go-version: "1.22.x"
+          go-version-file: go.mod
           cache: true
 
       - uses: sigstore/[email protected]