feat(flagd): support Python 3.14 for flagd

.github/workflows/build.yml

@@ -56,9 +56,6 @@ jobs:
       matrix:
         python-version: ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
         package: ${{ fromJSON(needs.changes.outputs.packages) }}
-        exclude: # enable when `grpcio` has Python 3.14 wheels
-          - python-version: "3.14"
-            package: "providers/openfeature-provider-flagd"
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:

providers/openfeature-provider-flagd/pyproject.toml

@@ -19,16 +19,12 @@ keywords = []
 dependencies = [
   "openfeature-sdk>=0.8.2",
   "grpcio>=1.68.1",
-  "protobuf>=5.29.5",
-  "mmh3>=4.1.0",
+  "protobuf>=6.30.0,<7.0.0",
+  "mmh3>=5.0.0,<6.0.0",
   "panzi-json-logic>=1.0.1",
   "semver>=3,<4",
   "pyyaml>=6.0.1",
-  "cachebox; python_version >= '3.10'",
-  # version `5.0.1` wheels for Python 3.9 on macOS were the last one for now,
-  # but it looks like the next version `>5.0.4` will have one again.
-  # for simplicity, restircting it for all platforms for now.
-  "cachebox<=5.0.1; python_version < '3.10'",
+  "cachebox>=5.1.0,<6.0.0",
 ]
 requires-python = ">=3.9"
 
@@ -52,7 +48,7 @@ dev = [
 [tool.hatch.build.hooks.protobuf]
 generate_pyi = false
 dependencies = [
-    "protobuf==5.29.5",
+    "protobuf~=6.0",
     "hatch-protobuf",
     "mypy-protobuf~=3.0",
 ]