[v10.3.x] Update Go version to avoid format error (#87832)

Update Go version to avoid format error (#87821)

(cherry picked from commit fade57d78e)

Co-authored-by: Fabrizio <135109076+fabrizio-grafana@users.noreply.github.com>

.github/workflows/bump-version.yml

@@ -58,7 +58,7 @@ jobs:
       # Go is required for also updating the schema versions as part of the precommit hook:
       - uses: actions/setup-go@v4
         with:
-          go-version: '1.20'
+          go-version: '1.21'
       - uses: actions/setup-node@v4
         with:
           node-version: '18'