[Infra] Follow-up to #14176 (#14177)

Author: ncooke3

.github/workflows/firestore.yml

@@ -30,18 +30,18 @@ jobs:
     # Only when this is not a scheduled run
     if: github.event_name != 'schedule'
     outputs:
-      changed: ${{ steps.firestore_src_changes.outputs.sources || steps.related_changes.outputs.other_changes }}
+      changed: ${{ steps.firestore_src_changes.outputs.sources == 'true' || steps.related_changes.outputs.other_changes == 'true' }}
     steps:
-      - uses: dorny/paths-filter@v2
+      - uses: dorny/paths-filter@v3.0.2
         id: firestore_src_changes
         with:
           predicate-quantifier: 'every'
           filters: |
             sources:
               # Firestore sources
               - 'Firestore/**'
-              - '!**/*.md'
-      - uses: dorny/paths-filter@v2
+              - '!Firestore/**/*.md'
+      - uses: dorny/paths-filter@v3.0.2
         id: related_changes
         with:
           filters: |