Fix remaining linting issues in core-hello-part5 solution

- Remove trailing whitespace from snap files
- Add newlines at end of snap files
- Remove extra blank line from utils_nfschema_plugin/main.nf

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: pinin4fjords

hello-nf-core/solutions/core-hello-part5/modules/nf-core/cat/cat/tests/main.nf.test.snap

@@ -93,7 +93,7 @@
     "test_cat_name_conflict": {
         "content": [
             [
-                
+
             ]
         ],
         "meta": {
@@ -144,4 +144,4 @@
         },
         "timestamp": "2024-07-22T11:51:57.581523"
     }
-}
+}

hello-nf-core/solutions/core-hello-part5/subworkflows/nf-core/utils_nextflow_pipeline/tests/main.function.nf.test.snap

@@ -17,4 +17,4 @@
         },
         "timestamp": "2024-02-28T12:02:12.425833"
     }
-}
+}

hello-nf-core/solutions/core-hello-part5/subworkflows/nf-core/utils_nfcore_pipeline/tests/main.function.nf.test.snap

@@ -133,4 +133,4 @@
         },
         "timestamp": "2024-02-28T12:03:21.714424"
     }
-}
+}

hello-nf-core/solutions/core-hello-part5/subworkflows/nf-core/utils_nfcore_pipeline/tests/main.workflow.nf.test.snap

@@ -16,4 +16,4 @@
         },
         "timestamp": "2024-02-28T12:03:25.726491"
     }
-}
+}

hello-nf-core/solutions/core-hello-part5/subworkflows/nf-core/utils_nfschema_plugin/main.nf

@@ -71,4 +71,3 @@ workflow UTILS_NFSCHEMA_PLUGIN {
     emit:
     dummy_emit = true
 }
-