[Security] Workflow mega-linter.yml is using vulnerable action nvuillam/mega-linter

The workflow mega-linter.yml is referencing action nvuillam/mega-linter using references insiders. However this reference is missing the commit [68d87f58707d1912b705e071e4c03dc69d962500](https://github.com/nvuillam/mega-linter/commits/68d87f58707d1912b705e071e4c03dc69d962500) which may contain fix to the some vulnerability.
The vulnerability fix that is missing by actions version could be related to:
(1) CVE fix
(2) upgrade of vulnerable dependency
(3) fix to secret leak and others.
Please consider to update the reference to the action.

Start by reading the mega-linter.yml workflow and inspect the nvuillam/mega-linter action reference. Compare it with commit 68d87f58707d1912b705e071e4c03dc69d962500; done means the workflow references the requested commit and its configuration remains valid.

Written by the indexing model from the issue text.