v2.6.1

The 2.6.1 release is only backporting a few bug fixes before the 2.7.0.

What's Changed

• [2.6.x] Merge pull request #1284 from geonetwork/docs-update by @github-actions[bot] in #1312
• [2.6.x] Merge pull request #1304 from geonetwork/dh-related-records-contact by @github-actions[bot] in #1313
• [2.6.x] Merge pull request #1315 from geonetwork/dh-api-card-protocol-translation by @github-actions[bot] in #1318
• Backport/2.6.x/tms no style issues by @LHBruneton-C2C in #1324
• Backport/2.6.x/quality system various fixes by @LHBruneton-C2C in #1325

Full Changelog: v2.6.0...v2.6.1