Update gitpython to 3.1.34

Adressess dependabot-#5

Author: nihathrael

setup.py

@@ -2,7 +2,7 @@
 
 setup(
     name="teamscale-cli",
-    version="9.1.0",
+    version="9.1.1",
     author="Thomas Kinnen - CQSE GmbH",
     author_email="kinnen@cqse.eu",
     description=("Client for performing precommit analysis with Teamscale."),
@@ -21,7 +21,7 @@
     },
     install_requires=[
         'teamscale-client==7.1.1',
-        'gitpython==3.1.32',
+        'gitpython==3.1.34',
 
         # Required for gitpython, build fails without specifying a fixed version.
         # 2.0.6 is the latest version working with python 2.7 according to