fix(ci): set up Go before tests

.gitea/workflows/test-and-release.yml

@@ -22,6 +22,11 @@ jobs:
           git fetch --prune --no-recurse-submodules origin +refs/heads/*:refs/remotes/origin/* +refs/tags/*:refs/tags/*
           git checkout --detach "${{ github.sha }}"
 
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
       - name: Test module
         run: go test ./...