chore(deps): bump ko-build/setup-ko from 0.7 to 0.8 (#392)

Bumps [ko-build/setup-ko](https://github.com/ko-build/setup-ko) from 0.7 to 0.8.
- [Release notes](https://github.com/ko-build/setup-ko/releases)
- [Commits](ko-build/setup-ko@v0.7...v0.8)

---
updated-dependencies:
- dependency-name: ko-build/setup-ko
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/ci.yaml

@@ -112,7 +112,7 @@ jobs:
 
         # Make the $REGISTRY_NAME -> local-registry
         echo "$(hostname -I | cut -d' ' -f1) $REGISTRY_NAME" | sudo tee -a /etc/hosts
-    - uses: ko-build/setup-ko@v0.7
+    - uses: ko-build/setup-ko@v0.8
     - name: Build Source Controller
       run: |
         set -o errexit