chore: Update CI container tag

Signed-off-by: Naren Dasan <[email protected]>

Author: narendasan

.github/workflows/docgen.yml

@@ -12,7 +12,7 @@ jobs:
   build-docs:
     runs-on: ubuntu-18.04
     container:
-      image: docker.pkg.github.com/pytorch/tensorrt/docgen:1.1.0
+      image: docker.pkg.github.com/pytorch/tensorrt/docgen:latest
       credentials:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}