Update xformers

Author: StephanAkkerman

backend/requirements.txt

@@ -20,7 +20,7 @@ pycountry==24.6.1
 fastapi==0.115.12
 uvicorn[standard]==0.34.1
 # Performance dependencies
-xformers==0.0.29
+xformers==0.0.30
 # flash_attn==2.7.3; sys_platform == 'linux'
 triton-windows==3.3.0.post19; sys_platform == 'win32'
 triton==3.3.0; sys_platform == 'linux'