Bump mikefarah/yq from 4.16.2 to 4.20.2 (sigstore#1510)

Bumps [mikefarah/yq](https://github.com/mikefarah/yq) from 4.16.2 to 4.20.2.
- [Release notes](https://github.com/mikefarah/yq/releases)
- [Changelog](https://github.com/mikefarah/yq/blob/master/release_notes.txt)
- [Commits](mikefarah/yq@915e9de...558a180)

---
updated-dependencies:
- dependency-name: mikefarah/yq
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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

.github/workflows/kind-e2e-cosigned.yaml

@@ -68,7 +68,7 @@ jobs:
     - uses: imjasonh/setup-ko@2c3450ca27f6e6f2b02e72a40f2163c281a1f675 # v0.4
 
     - name: Install yq
-      uses: mikefarah/yq@915e9de437b645435e004ef13c5dc347f855658d # v4.16.2
+      uses: mikefarah/yq@558a18029a8c1889186c7850def35dd819e31c0c # v4.16.2
 
     - name: Install Cosign
       run: |