Update verify-agent-builder-compatibility.yml to only run against 3.10

Author: dbschmigelski

.github/workflows/verify-agent-builder-compatibility.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13"]
+        python-version: ["3.10"]
 
     steps:
       - name: Checkout sdk-python