* NIFI-11443 Routed Python Framework Logging to SLF4J
- Changed Python logging to use standard output stream
- Adjusted Python logging format for simplified processing
- Updated PythonProcess to pipe standard error and standard output streams to reader
- Added Log Reader command with Virtual Thread for each Python Process
- Removed Python log properties from NiFi Properties configuration
- Updated GitHub workflow so that system tests include Python 3.9
- Updated GitHub actions to build necessary modules for system tests
This closes#7003
Co-authored-by: David Handermann <exceptionfactory@apache.org>
Signed-off-by: David Handermann <exceptionfactory@apache.org>