Adding CI for dev-v3 branch

When the main branch is for Helm v4, the dev-v3 branch is for Helm v3.

Note, the canary release is setup for helm v4 once the v3 branch is created
and there is no canary release for v3.

Signed-off-by: Matt Farina <matt.farina@suse.com>

.github/workflows/build-test.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches:
       - "main"
+      - "dev-v3"
       - "release-**"
   pull_request:
     branches:

.github/workflows/codeql-analysis.yml

@@ -13,10 +13,14 @@ name: "CodeQL"
 
 on:
   push:
-    branches: [ main ]
+    branches:
+      - main
+      - dev-v3
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ main ]
+    branches:
+      - main
+      - dev-v3
   schedule:
     - cron: '29 6 * * 6'