Update bridgecrewio/checkov-action digest to a6a5c23

Author: renovate[bot]

.github/workflows/checkov.yml

@@ -38,7 +38,7 @@ jobs:
           persist-credentials: false
 
       - name: Checkov GitHub Action
-        uses: bridgecrewio/checkov-action@dfb51aed1b783289b0d3f255028e7a88d5e8caa1 # v12
+        uses: bridgecrewio/checkov-action@a6a5c23963b9d127020ae43a959cd5d8eefc94c7 # v12
         with:
           # This will add both a CLI output to the console and create a results.sarif file
           output_format: cli,sarif