chore: align go version handling with gitea (#226)

Aligns Go version handling with gitea, see https://github.com/go-gitea/gitea/pull/38559. `toolchain` names the build version, `go` stays the minimum.

Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/226
Reviewed-by: techknowlogick <9+techknowlogick@noreply.gitea.com>
Co-authored-by: silverwind <me@silverwind.io>

.gitea/workflows/release-tag.yml

@@ -16,7 +16,8 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7
         with:
-          go-version: stable
+          go-version-file: 'go.mod'
+          check-latest: true
       - name: Install GoReleaser
         run: go install github.com/goreleaser/goreleaser/v2@latest
       - name: Run GoReleaser

.gitea/workflows/test-pr.yml

@@ -11,6 +11,7 @@ jobs:
       - uses: actions/setup-go@b7ad1dad31e06c5925ef5d2fc7ad053ef454303e # v7
         with:
           go-version-file: 'go.mod'
+          check-latest: true
       - name: lint
         run: make lint
       - name: build