Update league/commonmark library from ~2.4.0 to ~2.6.0 ( ~2 )

Problem/Motivation

Facing a "Found 1 security vulnerability advisory affecting 1 package." warning when using the composer.

Found 1 security vulnerability advisory affecting 1 package:
+-------------------+----------------------------------------------------------------------------------+
| Package           | league/commonmark                                                                |
| Severity          | high                                                                             |
| CVE               | NO CVE                                                                           |
| Title             | league/commonmark's quadratic complexity bugs may lead to a denial of service    |
| URL               | https://github.com/advisories/GHSA-c2pc-g5qf-rfrf                                |
| Affected versions | <2.6.0                                                                           |
| Reported at       | 2024-12-09T20:42:07+00:00                                                        |
| Advisory ID       | PKSA-fndg-qryc-dyc9                                                              |
+-------------------+----------------------------------------------------------------------------------+

thephpleague/commonmark 2.6.1 was released on 2024/12/29
https://github.com/thephpleague/commonmark/releases/tag/2.6.1

Proposed resolution

• Change league/commonmark to ~2 in the composer.json files.

Remaining tasks

• ✅ File an issue about this project
• ✅ Addition/Change/Update/Fix to this project
• ✅ Testing to ensure no regression
• ➖ Automated unit/functional testing coverage
• ➖ Developer Documentation support on feature change/addition
• ➖ User Guide Documentation support on feature change/addition
• ➖ UX/UI designer responsibilities
• ➖ Accessibility and Readability
• ✅ Code review from 1 Varbase core team member
• ✅ Full testing and approval
• ✅ Credit contributors
• ✅ Review with the product owner
• ✅ Update Release Notes and Update Helper on new feature change/addition
• ✅ Release varbase-10.0.3, varbase_components-2.0.9

Varbase update type

• ✅ No Update
• ➖ Optional Update
• ➖ Forced Update
• ➖ Forced Update if Unchanged

User interface changes

• N/A

API changes

• N/A

Data model changes

• N/A

Release notes snippet

• Issue #3497352: Updated league/commonmark library from ~2.4.0 to ~2.6.0 ( ~2 )