Bump chainguard-dev/actions/setup-gitsign from 1.6.25 to 1.6.26

Bumps [chainguard-dev/actions/setup-gitsign](https://github.com/chainguard-dev/actions) from 1.6.25 to 1.6.26.
- [Release notes](https://github.com/chainguard-dev/actions/releases)
- [Commits](chainguard-dev/actions@e1c4977...f0be699)

---
updated-dependencies:
- dependency-name: chainguard-dev/actions/setup-gitsign
  dependency-version: 1.6.26
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/early-release.yml

@@ -92,7 +92,7 @@ jobs:
     - id: install-gitsign
       name: Install gitsign for commit signing
       # See https://github.com/chainguard-dev/actions/blob/main/setup-gitsign/action.yml
-      uses: chainguard-dev/actions/setup-gitsign@e1c4977ad9cb32b12c5b222ec0134a22bec60bd5
+      uses: chainguard-dev/actions/setup-gitsign@f0be69916b439d0fcced2451b23d0f27cd46d545
     - id: move-tag
       name: Move early-access-release tag
       env: