chore(deps): bump protobuf from 6.33.2 to 6.33.4 in /backend/python/transformers (#7993)

chore(deps): bump protobuf in /backend/python/transformers

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 6.33.2 to 6.33.4.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 6.33.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/python/transformers/requirements-cpu.txt

@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.2
+protobuf==6.33.4

backend/python/transformers/requirements-cublas12.txt

@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.2
+protobuf==6.33.4

backend/python/transformers/requirements-cublas13.txt

@@ -6,4 +6,4 @@ transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.2
+protobuf==6.33.4

backend/python/transformers/requirements-hipblas.txt

@@ -8,4 +8,4 @@ bitsandbytes
 outetts
 bitsandbytes
 sentence-transformers==5.2.0
-protobuf==6.33.2
+protobuf==6.33.4

backend/python/transformers/requirements-intel.txt

@@ -10,4 +10,4 @@ intel-extension-for-transformers
 bitsandbytes
 outetts
 sentence-transformers==5.2.0
-protobuf==6.33.2
+protobuf==6.33.4

backend/python/transformers/requirements.txt

@@ -1,5 +1,5 @@
 grpcio==1.76.0
-protobuf==6.33.2
+protobuf==6.33.4
 certifi
 setuptools
 scipy==1.15.1