Bug 1782249 [wpt PR 35271] - Update docker image for WebKitGTK depend…

…encies (PAC proxy support), a=testonly

Automatic update from web-platform-tests
Update docker image for WebKitGTK dependencies.

- libproxy1-plugin-webkit and glib-networking-services are needed to
 have the support for configuring the WebKitWebDriver proxy via a PAC
 file, in order to pass the test infrastructure/server/test-pac.html

--

wpt-commits: d9abd659d4811bd6fab8bb4fa4de9444522f65ed
wpt-pr: 35271

testing/web-platform/tests/.taskcluster.yml

@@ -57,7 +57,7 @@ tasks:
             owner: ${owner}
             source: ${event.repository.clone_url}
           payload:
-            image: webplatformtests/wpt:0.48
+            image: webplatformtests/wpt:0.52
             maxRunTime: 7200
             artifacts:
               public/results:

testing/web-platform/tests/tools/ci/tc/tasks/test.yml

@@ -4,7 +4,7 @@ components:
     workerType: ci
     schedulerId: taskcluster-github
     deadline: "24 hours"
-    image: webplatformtests/wpt:0.48
+    image: webplatformtests/wpt:0.52
     maxRunTime: 7200
     artifacts:
       public/results:

testing/web-platform/tests/tools/docker/Dockerfile

@@ -16,9 +16,11 @@ RUN apt-get -qqy update \
     fluxbox \
     gdebi \
     git \
+    glib-networking-services \
     gstreamer1.0-plugins-bad \
     gstreamer1.0-gl \
     libosmesa6-dev \
+    libproxy1-plugin-webkit \
     libvirt-daemon-system \
     libvirt-clients \
     libunwind8 \