feat: TRTLLM-6224 update xgrammar version to 0.1.19 (#5830)

Signed-off-by: Wanli Jiang <35160485+Wanli-Jiang@users.noreply.github.com>

Author: Wanli-Jiang

requirements.txt

@@ -50,7 +50,7 @@ peft
 einops
 flashinfer-python==0.2.5
 opencv-python-headless
-xgrammar==0.1.18
+xgrammar==0.1.19
 backoff
 nvtx
 matplotlib # FIXME: this is added to make nvtx happy