generator, service: Add Python 3.14 support, part 1 (#1256)

* service: Add grpcio-tools version for Python 3.14

* generator: Add grpcio-tools version for Python 3.14

* chore(deps): Update poetry.lock

* github: Run checks and unit tests with Python 3.14

Author: bkeryan

.github/workflows/check_nimg.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        python-version: [3.9, 3.13]
+        python-version: [3.9, 3.14]
     runs-on: ${{ matrix.os }}
     defaults:
       run:

.github/workflows/check_nims.yml

@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest, macos-latest]
-        python-version: [3.9, 3.13]
+        python-version: [3.9, 3.14]
     runs-on: ${{ matrix.os }}
     defaults:
       run:

.github/workflows/run_unit_tests.yml

@@ -11,7 +11,8 @@ jobs:
     strategy:
       matrix:
         os: [windows-latest, ubuntu-latest]
-        python-version: [3.9, '3.10', 3.11, 3.12, 3.13]
+        # grpcio does not have binary wheels for pypy or free-threading, as of version 1.75.1.
+        python-version: [3.9, '3.10', 3.11, 3.12, 3.13, 3.14]
       # Fail-fast skews the pass/fail ratio and seems to make pytest produce
       # incomplete JUnit XML results.
       fail-fast: false

packages/generator/poetry.lock

@@ -53,7 +53,8 @@ tox = ">=4.0"
 grpcio-tools = [
   {version = "1.49.1", python = ">=3.9,<3.12"},
   {version = "1.59.0", python = ">=3.12,<3.13"},
-  {version = "1.67.0", python = "^3.13"},
+  {version = "1.67.0", python = ">=3.13,<3.14"},
+  {version = "1.75.1", python = "^3.14"},
 ]
 # NumPy dropped support for Python 3.8 before adding support for Python 3.12, so
 # we need to include multiple NumPy versions in poetry.lock.