build(deps): bump actions/setup-go from 4 to 5 (#333)

Bumps [actions/setup-go](https://github.com/actions/setup-go) from 4 to 5.
- [Release notes](https://github.com/actions/setup-go/releases)
- [Commits](actions/setup-go@v4...v5)

---
updated-dependencies:
- dependency-name: actions/setup-go
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/_build_image.yml

@@ -73,7 +73,7 @@ jobs:
         GCR_IMAGE_NAME: ${{ inputs.gcr_name }}
         LOAD_IMAGE: ${{ github.event_name == 'pull_request' && 'true' || 'false' }}
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       if: ${{ inputs.test_toolchain }}
       with:
         go-version: ${{ inputs.go_version }}

.github/workflows/_regenerate_toolchain.yml

@@ -40,7 +40,7 @@ jobs:
         fetch-depth: 0
         token: ${{ steps.appauth.outputs.token }}
     - name: Set up Go
-      uses: actions/setup-go@v4
+      uses: actions/setup-go@v5
       with:
         go-version: ${{ inputs.go_version }}
         cache: false