Set .python-version to 3.9

Author: Val Brodsky

.python-version

@@ -1 +1 @@
-3.8.18
+3.9.18

libs/lbox-clients/.python-version

@@ -0,0 +1 @@
+3.9.18

requirements-dev.lock

@@ -90,9 +90,6 @@ importlib-metadata==8.0.0
     # via sphinx
     # via typeguard
     # via yapf
-importlib-resources==6.4.0
-    # via jsonschema
-    # via jsonschema-specifications
 iniconfig==2.0.0
     # via pytest
 ipython==8.12.3
@@ -163,8 +160,6 @@ pickleshare==0.7.5
     # via ipython
 pillow==10.4.0
     # via labelbox
-pkgutil-resolve-name==1.3.10
-    # via jsonschema
 platformdirs==4.2.2
     # via black
     # via jupyter-core
@@ -224,7 +219,6 @@ python-dateutil==2.9.0.post0
     # via labelbox
     # via pandas
 pytz==2024.1
-    # via babel
     # via pandas
 pyzmq==26.0.3
     # via jupyter-client
@@ -319,15 +313,13 @@ types-python-dateutil==2.9.0.20240316
 types-requests==2.32.0.20240622
 types-tqdm==4.66.0.20240417
 typing-extensions==4.12.2
-    # via annotated-types
     # via black
     # via databooks
     # via ipython
     # via labelbox
     # via mypy
     # via pydantic
     # via pydantic-core
-    # via rich
     # via typeguard
     # via typer
 tzdata==2024.1
@@ -343,4 +335,3 @@ webencodings==0.5.1
 yapf==0.40.2
 zipp==3.19.2
     # via importlib-metadata
-    # via importlib-resources

requirements.lock

@@ -87,8 +87,6 @@ pyproj==3.5.0
     # via labelbox
 python-dateutil==2.9.0.post0
     # via labelbox
-pytz==2024.1
-    # via babel
 requests==2.32.3
     # via google-api-core
     # via labelbox
@@ -130,7 +128,6 @@ tqdm==4.66.4
 typeguard==4.3.0
     # via labelbox
 typing-extensions==4.12.2
-    # via annotated-types
     # via labelbox
     # via mypy
     # via pydantic