Bump golang/go from go1.21.5 to 1.21.6

Bumps [golang/go](https://github.com/golang/go) from go1.21.5 to 1.21.6. This release includes the previously tagged commit.
- [Commits](golang/go@go1.21.5...go1.21.6)

---
updated-dependencies:
- dependency-name: golang/go
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/dependabot_hack.yml

@@ -20,7 +20,7 @@ jobs:
       # 4. integration_test.yml
       # 5. virtual_test.yml
       # 6. the go.mod (if it is a major or minor version change e.g. 1.14 to 1.15)
-      - uses: golang/go@go1.21.5
+      - uses: golang/go@go1.21.6
 
       # update the versions in the devcontainer Dockerfile manually, too
       - uses: golang/tools@gopls/v0