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

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]>

Author: dependabot[bot]

.github/workflows/publish.yaml

@@ -25,7 +25,7 @@ jobs:
           check-latest: true
 
       - name: Setup Ko
-        uses: ko-build/setup-ko@v0.7
+        uses: ko-build/setup-ko@v0.8
 
       - name: Run Ko
         run: |