Relax protobuf library version constraints (#33202)

Signed-off-by: Jeffrey Wang <jeffreywang@anyscale.com>

pyproject.toml

@@ -9,7 +9,7 @@ requires = [
     "torch == 2.9.1",
     "wheel",
     "jinja2",
-    "grpcio-tools>=1.76.0",
+    "grpcio-tools",
 ]
 build-backend = "setuptools.build_meta"
 

requirements/build.txt

@@ -9,5 +9,5 @@ wheel
 jinja2>=3.1.6
 regex
 build
-protobuf>=6.33.2
-grpcio-tools>=1.76.0
+protobuf
+grpcio-tools

requirements/common.txt

@@ -9,7 +9,7 @@ blake3
 py-cpuinfo
 transformers >= 4.56.0, < 5
 tokenizers >= 0.21.1  # Required for fast incremental detokenization.
-protobuf >= 6.30.0 # Required by LlamaTokenizer, gRPC.
+protobuf # Required by LlamaTokenizer, gRPC.
 fastapi[standard] >= 0.115.0 # Required by FastAPI's form models in the OpenAI API server's audio transcriptions endpoint.
 aiohttp
 openai >= 1.99.1  # For Responses API with reasoning content
@@ -51,5 +51,5 @@ openai-harmony >= 0.0.3  # Required for gpt-oss
 anthropic >= 0.71.0
 model-hosting-container-standards >= 0.1.13, < 1.0.0
 mcp
-grpcio>=1.76.0
-grpcio-reflection>=1.76.0
\ No newline at end of file
+grpcio
+grpcio-reflection
\ No newline at end of file