Upgrade to Matomo 5.3.1

Why these changes are being made:
Before proceeding with the installation of the new premium plugins, we
update the instance of Matomo to the latest Docker version: 5.3.1

How this change is implemented:
* Updat the Dockerfile with the latest container source.

Related Jira tickets:
* https://mitlibraries.atlassian.net/browse/INFRA-517

Author: cabutlermit

Dockerfile

@@ -1,4 +1,6 @@
-FROM matomo:5.2.2
+FROM matomo:5.3.1
+  # checkov:skip=CKV_DOCKER_2:Skipping HEALTHCHECK configuration for now
+  # checkov:skip=CKV_DOCKER_3:Intentionally using root for the user
 
 # Add the EnvironmentVariables plugin
 COPY ./files/plugin-EnvironmentVariables-5.0.3/ /var/www/html/plugins/EnvironmentVariables
@@ -14,7 +16,6 @@ COPY --chmod=0644 --chown=root:root ./files/lang-htaccess /var/www/html/lang/.ht
 COPY --chmod=0644 --chown=root:root ./files/config-htaccess /var/www/html/config/.htaccess
 COPY --chmod=0644 --chown=root:root ./files/tmp-htaccess /var/www/html/tmp/.htaccess
 
-
 # Create mount point for EFS partition
 RUN mkdir -p /mnt/efs