label-issues/file-paths.yml: Add -changed-files (#500)

Follows the latest config format to specify file types that have labels
applied.

See:
https://github.com/actions/labeler?tab=readme-ov-file#basic-examples

---

Adds compatibility to the file to prevent this issue when running
against the v6.0.1 actions/labeler action:

```
found unexpected type for label 'language:python' (should be array of config options)
```

Signed-off-by: Michael Kubacki <[email protected]>

Author: makubacki

.sync/workflows/config/label-issues/file-paths.yml

@@ -14,5 +14,6 @@
 
 # Maintenance: Keep labels organized in ascending alphabetical order - easier to scan, identify duplicates, etc.
 
-language:python:
-  - '**/*.py'
+'language:python':
+- changed-files:
+  - any-glob-to-any-file: '**/*.py'