fix(ci/github/agent): add check for it not being an operator tag build

Author: ayuskauskas

.github/workflows/agent-container.yaml

@@ -3,8 +3,6 @@ name: Build and push agent container image
 # Configures this workflow to run every time a tag is created
 on:
   push:
-    tags-ignore:
-      - operator/*
     paths:
       - agent/**
       - containers/agent.Dockerfile
@@ -22,6 +20,7 @@ env:
 # There is a single job in this workflow. It's configured to run on the latest available version of Ubuntu.
 jobs:
   build-and-push-agent:
+    if: ${{ ! startsWith(github.ref, 'refs/tags/operator') }}
     runs-on: ubuntu-latest
     # Sets the permissions granted to the `GITHUB_TOKEN` for the actions in this job.
     permissions: