chore(deps): update dependency grpcio to v1.73.0

Author: renovate-bot

setup.py

@@ -43,7 +43,7 @@
     ],
     python_requires=">=3.8",
     install_requires=[
-        "grpcio==1.70.0",
+        "grpcio==1.73.0",
         "grpcio-status==1.66.1",
         "grpcio-tools==1.70.0",
         "googleapis-common-protos==1.69.0",