feat: add trove classifier for Python 3.14 (#842)

* chore: add trove classifier for Python 3.14

* pin grpcio and grpcio-status versions

* revert pinning grpcio for python 3.12 and 3.13

Author: Linchin

pyproject.toml

@@ -40,6 +40,7 @@ classifiers = [
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
   "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
   "Operating System :: OS Independent",
   "Topic :: Internet",
 ]
@@ -62,8 +63,10 @@ async_rest = ["google-auth[aiohttp] >= 2.35.0, < 3.0.0"]
 grpc = [
   "grpcio >= 1.33.2, < 2.0.0",
   "grpcio >= 1.49.1, < 2.0.0; python_version >= '3.11'",
+  "grpcio >= 1.75.1, < 2.0.0; python_version >= '3.14'",
   "grpcio-status >= 1.33.2, < 2.0.0",
   "grpcio-status >= 1.49.1, < 2.0.0; python_version >= '3.11'",
+  "grpcio-status >= 1.75.1, < 2.0.0; python_version >= '3.14'",
 ]
 grpcgcp = ["grpcio-gcp >= 0.2.2, < 1.0.0"]
 grpcio-gcp = ["grpcio-gcp >= 0.2.2, < 1.0.0"]