App.get_value(): Remove redundant fd.close()

The fd.close() call inside the `with open(...) as fd:` block is redundant because the file handle is managed by the context manager. Remove it.
Assisted-by: unsloth/Qwen3.6-35B-A3B-GGUF:IQ4_NL and pi.dev
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/App.py

@@ -545,7 +545,6 @@ class App(Base):
                 try:
                     with open(version_path) as fd:
                         ret = fd.read().replace('\n', '').replace('-dev', '')
-                        fd.close()
                         return ret
                 except EnvironmentError:
                     log(DEBUG, f'Ignoring unreadable file "{version_path}"')