ci: bump to taskgraph 11.2.4

Author: jcristau

.taskcluster.yml

@@ -234,7 +234,7 @@ tasks:
                                 # Note: This task is built server side without the context or tooling that
                                 # exist in tree so we must hard code the hash
                                 image:
-                                    mozillareleases/taskgraph:decision-v8.0.1@sha256:74c5a20e7d8c8bdbec6770c61274d3970991273ffe5c955d0868bb3cd7eb3160
+                                    mozillareleases/taskgraph:decision-v11.2.4@sha256:eb53b1ca6b86b1344d61f55aab77b130048c0ae007eef181ec82eec327e91e07
 
                                 maxRunTime: 1800
 

taskcluster/docker/base/Dockerfile

@@ -7,7 +7,7 @@ FROM ubuntu:22.04
 MAINTAINER Tom Prince "[email protected]"
 
 # Add worker user
-RUN mkdir /builds && \
+RUN mkdir -p /builds && \
     useradd -d /builds/worker -s /bin/bash -m worker && \
     chown worker:worker /builds/worker && \
     mkdir /builds/worker/artifacts && \