Update foonathan.net links

[raulojeda22]

Description

The links to the foonathan website have changed, the previous links pointed to 404 error, this update now makes the links point to the correct endpoint.

@Mergifyio backport 3.4.x 3.3.x 3.2.x 2.14.x

Contributor Checklist

• Commit messages follow the project guidelines.
• N/A The code follows the style guidelines of this project.
• _N/A_Tests that thoroughly check the new feature have been added/Regression tests checking the bug and its fix have been added; the added tests pass locally
• N/A Any new/modified methods have been properly documented using Doxygen.
• N/A Any new configuration API has an equivalent XML API (with the corresponding XSD extension)
• Changes are backport compatible: they do NOT break ABI nor change library core behavior.
• Changes are API compatible.
• N/A New feature has been added to the versions.md file (if applicable).
• N/A New feature has been documented/Current behavior is correctly described in the documentation.
• Applicable backports have been included in the description.

Reviewer Checklist

• The PR has a milestone assigned.
• The title and description correctly express the PR's purpose.
• Check contributor checklist is correct.
• N/A: If this is a critical bug fix, backports to the critical-only supported branches have been requested.
• N/A: Check CI results: changes do not issue any warning.
• N/A: Check CI results: failing tests are unrelated with the changes.

[cferreiragonz]

LGTM

[MiguelCompany]

@Mergifyio backport 3.4.x 3.2.x 2.14.x

[mergify]

backport 3.4.x 3.2.x 2.14.x

✅ Backports have been created

Details

• #6301 Update foonathan.net links (backport #6264) has been created for branch 3.4.x
• #6302 Update foonathan.net links (backport #6264) has been created for branch 3.2.x
• #6303 Update foonathan.net links (backport #6264) has been created for branch 2.14.x