Update tag-and-release.yml

Author: LandonTClipp

.github/workflows/tag-and-release.yml

@@ -2,13 +2,17 @@ name: Test and maybe create a new release
 
 on:
   push:
-    branches:
-      - master
+    branches: [master, v3]
 permissions:
   contents: write
 jobs:
   test:
-      uses: ./.github/workflows/reusable-testing.yml
+      runs-on: ubuntu-latest
+      steps:
+        - uses: actions/checkout@v2
+          with:
+            fetch-depth: 0
+        - uses: ./.github/workflows/reusable-testing.yml
   tag:
     runs-on: ubuntu-latest
     needs: test