Update Debian LTS kernel to v4.19.206

.github/workflows/debian_lts.yml

@@ -7,7 +7,7 @@ name: Debian LTS
 
 env:
   GPG_KEY_ID: 56C464BAAC421453
-  KERNEL_VERSION: 4.19.203
+  KERNEL_VERSION: 4.19.206
   KERNEL_REVISION: 1
   LOCALVERSION: -surface-lts
   MAINLINE_REPO: git://git.launchpad.net/~ubuntu-kernel-test/ubuntu/+source/linux/+git/mainline-crack