Updates dorny/paths-filter and pins to fbd0ab8f3e69293af611ebaee6363fc25e6d187d

Updates dorny/paths-filter from v3 to v4.0.1 and pins to a specific commit hash instead of the tag.

Author: Alex-Welsh

.github/workflows/stackhpc-pull-request.yml

@@ -30,7 +30,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Check changed files
-        uses: dorny/paths-filter@v3
+        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
         id: changes
         with:
           # Filters are defined in this file.

.github/workflows/trigger-overcloud-host-image-build.yml

@@ -17,7 +17,7 @@ jobs:
         uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: Check changed files
-        uses: dorny/paths-filter@v3
+        uses: dorny/paths-filter@fbd0ab8f3e69293af611ebaee6363fc25e6d187d # v4.0.1
         id: changes
         with:
           filters: .github/overcloud-host-image-build-path-filters.yml