feat: derive go version from go.mod file

Author: mmichaelb

.github/workflows/release.yml

@@ -24,6 +24,8 @@ jobs:
         fetch-depth: 0
     - name: Set up Go
       uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
+      with:
+        go-version-file: 'go.mod'
     - name: Generate Software Bill of Materials
       uses: anchore/sbom-action@e22c389904149dbc22b58101806040fa8d37a610 # v0
     - name: Import GPG key

.github/workflows/test.yml

@@ -14,6 +14,8 @@ jobs:
 
     - name: Set up Go
       uses: actions/setup-go@4b73464bb391d4059bd26b0524d20df3927bd417 # v6
+      with:
+        go-version-file: 'go.mod'
 
     - name: Run tests
       run: make test