ci: only tag once with latest (#152)

Author: sdn4z

.github/actions/docker-build/action.yml

@@ -52,11 +52,9 @@ runs:
         tags: |
           type=semver,enable=true,pattern={{raw}}
           type=semver,enable=true,pattern={{major}},prefix=v
-          type=semver,enable=true,pattern=latest
           type=ref,event=pr,prefix=pr-,enable=true
           type=ref,event=branch,branch=main,pattern={{raw}}
           type=ref,event=branch,branch=main,pattern={{major}},prefix=v
-          type=ref,event=branch,branch=main,pattern=latest
     - name: Build Docker image
       uses: docker/build-push-action@263435318d21b8e681c14492fe198d362a7d2c83 # v6.18.0
       with: