build(deps): Bump the actions group with 2 updates (helm#772)

Bumps the actions group with 2 updates: [sigstore/cosign-installer](https://github.com/sigstore/cosign-installer) and [anchore/sbom-action](https://github.com/anchore/sbom-action).


Updates `sigstore/cosign-installer` from 3.9.2 to 3.10.0
- [Release notes](https://github.com/sigstore/cosign-installer/releases)
- [Commits](sigstore/cosign-installer@d58896d...d7543c9)

Updates `anchore/sbom-action` from 0.20.5 to 0.20.6
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md)
- [Commits](anchore/sbom-action@da167ea...f8bdd1d)

---
updated-dependencies:
- dependency-name: sigstore/cosign-installer
  dependency-version: 3.10.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: actions
- dependency-name: anchore/sbom-action
  dependency-version: 0.20.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/ci.yaml

@@ -33,10 +33,10 @@ jobs:
           install-only: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
+        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
 
       - name: Install syft
-        uses: anchore/sbom-action/download-syft@da167eac915b4e86f08b264dbdbc867b61be6f0c # v0.20.5
+        uses: anchore/sbom-action/download-syft@f8bdd1d8ac5e901a77a92f111440fdb1b593736b # v0.20.6
 
       - name: Install k8s Kind
         uses: helm/kind-action@a1b0e391336a6ee6713a0583f8c6240d70863de3 # v1.3.0

.github/workflows/release.yaml

@@ -36,10 +36,10 @@ jobs:
           install-only: true
 
       - name: Install cosign
-        uses: sigstore/cosign-installer@d58896d6a1865668819e1d91763c7751a165e159 # v3.9.2
+        uses: sigstore/cosign-installer@d7543c93d881b35a8faa02e8e3605f69b7a1ce62 # v3.10.0
 
       - name: Install syft
-        uses: anchore/sbom-action/download-syft@da167eac915b4e86f08b264dbdbc867b61be6f0c # v0.20.5
+        uses: anchore/sbom-action/download-syft@f8bdd1d8ac5e901a77a92f111440fdb1b593736b # v0.20.6
 
       - name: Install tools
         run: |