fix: improve Gitleaks configuration with source parameter

- Remove duplicate GITLEAKS_CONFIG env variable
- Add explicit source parameter to fix Git revision issues
- Keep config-path parameter for custom configuration

Author: d-oit

.github/workflows/security-consolidated.yml

@@ -172,9 +172,9 @@ jobs:
       uses: gitleaks/gitleaks-action@ff98106e4c7b2bc287b24eaf42907196329070c7
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        GITLEAKS_CONFIG: .gitleaks.toml
       with:
         config-path: .gitleaks.toml
+        source: "."
 
     - name: TruffleHog OSS scan
       uses: trufflesecurity/trufflehog@ad6fc8fb446b8fafbf7ea8193d2d6bfd42f45690