build(deps): bump sigstore/cosign-installer from 3.10.0 to 4.0.0

Bumps [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) from 3.10.0 to 4.0.0.
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@d7543c9...faadad0)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/chart-publish.yml

@@ -26,7 +26,7 @@ jobs:
       BASE_REPO: "ghcr.io/${{ github.repository }}"
     steps:
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
       - name: Checkout
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: Setup Go

.github/workflows/releaser.yml

@@ -57,7 +57,7 @@ jobs:
       - name: Install Syft
         uses: anchore/sbom-action/download-syft@aa0e114b2e19480f157109b9922bda359bd98b90 # v0.20.8
       - name: Install Cosign
-        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
+        uses: sigstore/cosign-installer@faadad0cce49287aee09b3a48701e75088a2c6ad # v4.0.0
       - name: Run GoReleaser
         id: run-goreleaser
         uses: goreleaser/goreleaser-action@e435ccd777264be153ace6237001ef4d979d3a7a # v6.4.0