Use double quotes

action.yaml

@@ -1,25 +1,25 @@
-name: 'github ghcr images cleanup'
-author: 'NodeFactory'
-description: 'github ghcr images cleanup from the github package registry'
+name: "github ghcr images cleanup"
+author: "NodeFactory"
+description: "github ghcr images cleanup from the github package registry"
 inputs:
   excluded_versions:
-    description: 'allows to exclude certain versions, eg. x.y.z, stable, beta, latest,...'
+    description: "allows to exclude certain versions, eg. x.y.z, stable, beta, latest,..."
     required: false
   num_versions_to_keep:
-    description: 'number of most recent versions to keep (excluded versions aren't included into count'
+    description: "number of most recent versions to keep (excluded versions aren't included into count"
     required: true
   package_name:
-    description: 'name of github package'
+    description: "name of github package"
     required: true
   token:
-    description: 'github auth token'
+    description: "github auth token"
     required: true
   username:
-    description: 'github username'
+    description: "github username"
     required: false
   organisation:
-    description: 'github organisation'
+    description: "github organisation"
     required: false
 runs:
-  using: 'node14'
-  main: 'dist/index.js'
+  using: "node14"
+  main: "dist/index.js"