PHP 8.4 updates

[mrrobot47]

This pull request includes updates to the php/8.4 Docker setup, introducing dependency management in Dependabot, upgrading the PHP version, and enabling New Relic integration. Below are the key changes grouped by theme:

Dependabot Configuration Updates:

• Added a new package-ecosystem entry for Docker in the php/8.4 directory, with a weekly update schedule and restrictions on PHP version updates. (.github/dependabot.yaml, .github/dependabot.yamlR108-R117)

PHP Version Upgrade:

• Updated the base image in the php/8.4/Dockerfile from php:8.4.1-fpm to php:8.4.10-fpm, ensuring compatibility with the latest PHP features and fixes. (php/8.4/Dockerfile, php/8.4/DockerfileL1-R1)

Removal of Deprecated Code:

• Removed commented-out code related to the mcrypt extension, which is no longer maintained or required. (php/8.4/Dockerfile, php/8.4/DockerfileL34-L47)

New Relic Integration:

• Re-enabled the New Relic PHP agent installation and configuration, including the addition of newrelic.ini to the appropriate directories. (php/8.4/Dockerfile, [1] [2]