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@3aebd05...d982fec)

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

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

.github/workflows/release.yaml

@@ -23,7 +23,7 @@ jobs:
 
       - uses: sigstore/cosign-installer@dc72c7d5c4d10cd6bcb8cf6e3fd625a9e5e537da # v3.7.0
 
-      - uses: ko-build/setup-ko@3aebd0597dc1e9d1a26bcfdb7cbeb19c131d3037 # v0.7
+      - uses: ko-build/setup-ko@d982fec422852203cfb2053a8ec6ad302280d04d # v0.8
 
       - run: echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.workflow }} --password-stdin