Bump docker/login-action from 2.1.0 to 3.0.0

Bumps [docker/login-action](https://github.com/docker/login-action) from 2.1.0 to 3.0.0.
- [Release notes](https://github.com/docker/login-action/releases)
- [Commits](docker/login-action@f4ef78c...343f7c4)

---
updated-dependencies:
- dependency-name: docker/login-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/ci-build.yml

@@ -128,7 +128,7 @@ jobs:
       uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3.5.2
 
     - name: Login to Harbor
-      uses: docker/login-action@f4ef78c080cd8ba55a85445d5b36e214a81df20a # v2.1.0
+      uses: docker/login-action@343f7c4344506bcbf9b4de18042ae17996df046d # v3.0.0
       with:
         registry: harbor.stfc.ac.uk/datagateway
         username: ${{ secrets.HARBOR_USERNAME }}