Update dependency protobuf to v6.33.0 (#3661)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

flink-python/dev/dev-requirements.txt

@@ -33,4 +33,4 @@ grpcio==1.75.1
 grpcio-tools==1.75.1
 pemja==0.6.1; python_version >= '3.7' and platform_system != 'Windows'
 httplib2>=0.31.0,<=0.31.0
-protobuf==6.32.1
+protobuf==6.33.0

flink-python/setup.py

@@ -311,7 +311,7 @@ def extracted_output_files(base_dir, file_path, output_directory):
     install_requires = ['py4j==0.10.9.9', 'python-dateutil==2.9.0.post0', 'apache-beam==2.68.0',
                         'cloudpickle==3.1.1', 'avro-python3>=1.10.2,!=1.9.2,<1.10.3',
                         'pytz>=2018.3', 'fastavro>=1.12.0,<1.13.0', 'requests>=2.26.0',
-                        'protobuf<6.33',
+                        'protobuf<6.34',
                         'pemja==0.6.1;'
                         'python_full_version >= "3.7" and platform_system != "Windows"',
                         'httplib2>=0.31.0,<=0.31.0', apache_flink_libraries_dependency]