gha: add cache-dependency-path to transform-sdk-release.yml

Fixes warning:
> Restore cache failed: Dependencies file is not found in
/home/runner/work/redpanda/redpanda. Supported file pattern: go.sum

(cherry picked from commit 4b572ba)

.github/workflows/transform-sdk-release.yml

@@ -22,6 +22,7 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: 1.22
+          cache-dependency-path: src/transform-sdk/go/transform/go.sum
       - name: Create golang specific tag
         id: gotag
         uses: actions/github-script@v7