Bump actions/attest-build-provenance from 1.4.3 to 1.4.4 (#2884)

Bumps [actions/attest-build-provenance](https://github.com/actions/attest-build-provenance) from 1.4.3 to 1.4.4.
- [Release notes](https://github.com/actions/attest-build-provenance/releases)
- [Changelog](https://github.com/actions/attest-build-provenance/blob/main/RELEASE.md)
- [Commits](actions/attest-build-provenance@1c608d1...ef24412)

---
updated-dependencies:
- dependency-name: actions/attest-build-provenance
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

.github/workflows/build.yml

@@ -129,7 +129,7 @@ jobs:
         dotnet publish ./src/LondonTravel.Site --arch x64 --os linux -p:PublishProfile=DefaultContainer
 
     - name: Attest container image
-      uses: actions/attest-build-provenance@1c608d11d69870c2092266b3f9a6f3abbf17002c # v1.4.3
+      uses: actions/attest-build-provenance@ef244123eb79f2f7a7e75d99086184180e6d0018 # v1.4.4
       if: steps.publish-container.outputs.container-digest != ''
       with:
         push-to-registry: true