CircleCI: Unpin grafana/docs-base (#24054)

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

.circleci/config.yml

@@ -858,7 +858,8 @@ jobs:
       - run:
       - run:
           name: Build Grafana docs website
           name: Build Grafana docs website
           command: |
           command: |
-            IMAGE=grafana/docs-base@sha256:63758b74e3990ab61e274f5e98da092d5c38378829dad0488aa97c59f0144f34
+            # Use latest revision here, since we want to catch if it breaks
+            IMAGE=grafana/docs-base:latest
 
 
             # In order to copy sources into the remote container, we need to employ a trick of creating a container
             # In order to copy sources into the remote container, we need to employ a trick of creating a container
             # with a volume, that we copy the sources into. Then, we launch the build container, with the volume
             # with a volume, that we copy the sources into. Then, we launch the build container, with the volume