fix: some errorhandling corrections

chore: updated versions

action.yml

@@ -2,10 +2,6 @@ name: STACKIT Secrets Manager Secret Fetcher
 description: Connects to Secrets Manager using a Go app, gets all secrets under a path, and outputs them.
 
 inputs:
-  go_version:
-    description: The version of Go to use for building the application.
-    required: false
-    default: 1.24.x
   vault_addr:
     description: You could optionally override the address.
     required: false
@@ -23,7 +19,7 @@ inputs:
   debug:
     description: Turn on debugging logs.
     required: false
-    default: false
+    default: 'false'
   version:
     description: The version of the action.
     required: false
@@ -32,6 +28,7 @@ inputs:
 outputs:
   secrets:
     description: A JSON object string containing all the fetched secrets.
+    value: ${{ steps.secrets.outputs.stdout }}
 
 runs:
   using: composite