Remove grpcio-tools from requirements.txt, it turns out it's not actually needed - only relevant during building and setup.py! Also downgrade grpcio to minimum version which supports Py3.11

PiperOrigin-RevId: 721887094

Author: xingyousong

.github/workflows/ci.yml

@@ -45,12 +45,13 @@ jobs:
           key: >-
             ${{ env.pythonLocation }}
             ${{ hashFiles('**/requirements*.txt') }}
-      - name: Install essential dependencies  # NOTE: grpcio-tools needs to be periodically updated.
+        # NOTE: grpcio-tools needs to be periodically updated to support later Python versions.
+      - name: Install essential dependencies
         run: |
           sudo apt-get install -y libprotobuf-dev
           python -m pip install --upgrade pip setuptools
           pip install wheel
-          pip install grpcio-tools>=1.66.2
+          pip install grpcio-tools>=1.70.0
           pip install pytest pytest-xdist
           pip wheel -e .
           pip install -e .

.github/workflows/pypi-publish-dev.yml

@@ -19,6 +19,7 @@ jobs:
       with:
         python-version: '3.11'
     - name: Install dependencies
+      # NOTE: grpcio-tools needs to be periodically updated to support later Python versions.
       run: |
         sudo apt-get install -y libprotobuf-dev
         python -m pip install --upgrade pip

.github/workflows/pypi-publish.yml

@@ -17,6 +17,7 @@ jobs:
       with:
         python-version: '3.11'
     - name: Install dependencies
+      # NOTE: grpcio-tools needs to be periodically updated to support later Python versions.
       run: |
         sudo apt-get install -y libprotobuf-dev
         python -m pip install --upgrade pip

requirements.txt

@@ -3,7 +3,6 @@ absl-py>=1.0.0
 numpy>=1.21.5
 protobuf>=3.6
 portpicker>=1.3.1
-grpcio>=1.66.2
-grpcio-tools>=1.66.2
+grpcio>=1.49.0
 googleapis-common-protos>=1.56.4
 sqlalchemy>=1.4