CI: Update v2 branch CI to be on par with v3 (#286)

* ci: Update CI to be on par with v3

* ci: Update gosop branch for GopenPGP-v2

.github/workflows/go.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches: [ main ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, v2 ]
 
 jobs:
   test:
@@ -36,7 +36,7 @@ jobs:
 
     - name: Test
       run: go test -v -race ./...
-
+      
   lint:
     name: Lint
     runs-on: ubuntu-latest
@@ -48,4 +48,4 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@v3
         with:
-          version: v1.50.1
+          version: v1.50.1