build(deps): bump the github-actions group across 2 directories with 2 updates

Bumps the github-actions group with 1 update in the / directory: [elastic/docs-builder](https://github.com/elastic/docs-builder).
Bumps the github-actions group with 1 update in the /.github/actions/bootstrap directory: [anchore/sbom-action](https://github.com/anchore/sbom-action).


Updates `elastic/docs-builder` from 0.34.1 to 0.35.0
- [Release notes](https://github.com/elastic/docs-builder/releases)
- [Commits](elastic/docs-builder@b133c9d...0c267f9)

Updates `anchore/sbom-action` from 0.19.0 to 0.20.0
- [Release notes](https://github.com/anchore/sbom-action/releases)
- [Changelog](https://github.com/anchore/sbom-action/blob/main/RELEASE.md)
- [Commits](anchore/sbom-action@9f73021...e11c554)

---
updated-dependencies:
- dependency-name: elastic/docs-builder
  dependency-version: 0.35.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: anchore/sbom-action
  dependency-version: 0.20.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
...

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

Author: dependabot[bot]

.github/actions/bootstrap/action.yml

@@ -28,4 +28,4 @@ runs:
     # See https://goreleaser.com/blog/supply-chain-security/
     - name: installs syft for generating the SBOM with goreleaser
       if: "${{ inputs.goreleaser == 'true' }}"
-      uses: anchore/sbom-action/download-syft@9f7302141466aa6482940f15371237e9d9f4c34a # v0.19.0
+      uses: anchore/sbom-action/download-syft@e11c554f704a0b820cbf8c51673f6945e0731532 # v0.20.0

.github/workflows/docs-build.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   docs-preview:
-    uses: elastic/docs-builder/.github/workflows/preview-build.yml@b133c9db88bc1d1bd83464bd6e275b010601f7af # 0.34.1
+    uses: elastic/docs-builder/.github/workflows/preview-build.yml@0c267f91cb72b20619f68e348b1afd50f4c7f358 # 0.35.0
     with:
       path-pattern: docs/**
     permissions:

.github/workflows/docs-cleanup.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   docs-preview:
-    uses: elastic/docs-builder/.github/workflows/preview-cleanup.yml@b133c9db88bc1d1bd83464bd6e275b010601f7af # main
+    uses: elastic/docs-builder/.github/workflows/preview-cleanup.yml@0c267f91cb72b20619f68e348b1afd50f4c7f358 # main
     permissions:
       contents: none
       id-token: write