Update unified workflow example to point to v2.3.1 reusable workflows

Author: cuixq

.github/workflows/osv-scanner-unified-workflow.yml

@@ -35,7 +35,7 @@ permissions:
 jobs:
   scan-scheduled:
     if: ${{ github.event_name == 'push' || github.event_name == 'schedule' }}
-    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable.yml@35ad5af695460e8fc22ee9777485303c8d0a88cf" # v2.3.0
+    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable.yml@ccb575fd49a679661853f52831627d4578f6816d" # v2.3.1
     with:
       # Example of specifying custom arguments
       scan-args: |-
@@ -44,7 +44,7 @@ jobs:
         ./
   scan-pr:
     if: ${{ github.event_name == 'pull_request' || github.event_name == 'merge_group' }}
-    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable-pr.yml@35ad5af695460e8fc22ee9777485303c8d0a88cf" # v2.3.0
+    uses: "google/osv-scanner-action/.github/workflows/osv-scanner-reusable-pr.yml@ccb575fd49a679661853f52831627d4578f6816d" # v2.3.1
     with:
       # Example of specifying custom arguments
       scan-args: |-