added gitguardian ignore for dummy secret

Author: drqc

.gitguardian.yaml

@@ -0,0 +1,5 @@
+secret:
+  ignored_matches:
+  - match: d670f070d6e1a1912a21bd62ab04d2cb490d62d34af75e858193abf497ba25da
+    name: dummy-secret1
+version: 2

.github/workflows/gitguardian.yaml

@@ -27,6 +27,8 @@ jobs:
           fetch-depth: 0 # fetch all history so multiple commits can be scanned
       - name: GitGuardian scan
         uses: GitGuardian/ggshield/actions/secret@main
+        with:
+          args: -v --ignore-known-secrets
         env:
           GITHUB_PUSH_BEFORE_SHA: ${{ github.event.before }}
           GITHUB_PUSH_BASE_SHA: ${{ github.event.base }}