Fix workflow naming error

Author: spencer@primus

.github/workflows/unit_test.yml

@@ -11,7 +11,7 @@ on:
 
 jobs:
   call_tester:
-    name: Run unit tests on $BRANCH_NAME branch
+    name: Run unit tests on ${{ env.BRANCH_NAME }} branch
     uses: avstack-lab/workflows/.github/workflows/test_on_branch_with_uv.yml@main
     with:
       branch: $BRANCH_NAME