Update dependency httpx-sse to v0.4.3

Signed-off-by: red-hat-konflux <126015336+red-hat-konflux[bot]@users.noreply.github.com>

Author: red-hat-konflux[bot]

requirements.txt

@@ -29,7 +29,7 @@ h11==0.16.0
 hf-xet==1.1.5 ; platform_machine == 'aarch64' or platform_machine == 'amd64' or platform_machine == 'arm64' or platform_machine == 'x86_64'
 httpcore==1.0.9
 httpx==0.28.1
-httpx-sse==0.4.1
+httpx-sse==0.4.3
 huggingface-hub==0.34.3
 idna==3.10
 importlib-metadata==8.7.0