chore(ci): Update deploy-env container tag

Use a newer container with Sphinx 3 installed.

.gitlab-ci.yml

@@ -46,7 +46,7 @@ lint:
 pages:
     stage: deploy
     # maintaned by q3k, build using docker/deploy-env
-    image: "derq3k/card10-deploy-env:20190806-200743Z-f95b541-dirty"
+    image: "registry.k0.hswaw.net/q3k/card10-deploy-env:20210403-110003Z-4d929ee0"
     script:
         - export LD_LIBRARY_PATH=$(llvm-config --libdir)
         - echo $LD_LIBRARY_PATH