refactor: Include v4 branch in security audit scans & disable docs build (#1103)

- Adjust security audit scan for v4
- Remove docs builder and deployer pipeline for `main`. New tool would
be used here: CPOUI5FOUNDATION-899

JIRA: CPOUI5FOUNDATION-975

Author: d3xter666

.github/workflows/deploy-docs.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        branch: ["main", "v3"] # List of branches to run the security audit on
+        branch: ["main", "v3", "v4"] # List of branches to run the security audit on
 
     steps:
       - name: Checkout '${{ matrix.branch }}' branch