Remove transformers override, relax core pin to >=5.3.0

vllm 0.20.0 excludes transformers 5.0-5.5.0. Relaxing the core dep
lets uv resolve transformers 5.8.0 for the vllm extra while other
extras keep 5.3.0.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Signed-off-by: Kajal Jain <kajalj@nvidia.com>

Author: kajalj22

pyproject.toml

@@ -49,7 +49,7 @@ dependencies = [
   "sympy>=1.14.0",
   "pillow>=12.1.1",
   "torchvision==0.26.0",
-  "transformers==5.3.0",
+  "transformers>=5.3.0",
   "num2words>=0.5.14",                                                                                                # for SmolVLM
   "mlflow>=3.11.1",
   "nvidia-nvshmem-cu13; sys_platform == 'linux' and (platform_machine == 'x86_64' or platform_machine == 'aarch64')", # for deep_ep build
@@ -287,9 +287,6 @@ override-dependencies = [
   "nvidia-cutlass-dsl>=4.4.1",
   # Relax megatron-core workspace member's opentelemetry-api ceiling (<1.34) for protobuf 6.x compat with ray
   "opentelemetry-api>=1.33.1",
-  # vLLM 0.20.0 may still need this transformers override.
-  # Override until vllm officially relaxes the constraint (https://github.com/vllm-project/vllm/issues/30466).
-  "transformers==5.3.0",
   #Override till we can upgrade sglang version to address CVE GHSA-7rgv-gqhr-fxg3
   "xgrammar==0.1.33",
   # Override dependencies to address CVEs