Add back line in .gitignore that got lost by accident.

Author: rwgk

.gitignore

@@ -20,6 +20,7 @@ cache_nvrtc
 # CUDA Python specific (auto-generated)
 cuda_bindings/cuda/bindings/_bindings/cydriver.pxd
 cuda_bindings/cuda/bindings/_bindings/cydriver.pyx
+cuda_bindings/cuda/bindings/_bindings/cyruntime.pxi
 cuda_bindings/cuda/bindings/_bindings/cyruntime.pxd
 cuda_bindings/cuda/bindings/_bindings/cyruntime.pyx
 cuda_bindings/cuda/bindings/_bindings/cyruntime_ptds.pxd
@@ -181,4 +182,4 @@ dmypy.json
 cython_debug/
 
 # Dont ignore
-!.github/actions/build/
+!.github/actions/build/