Version 4.13.0 - support for overlapping certificates during transition both partners

What's Changed

• Bump joi from 17.13.3 to 17.13.7 in /WebUI by @dependabot[bot] in #608
• Bump svgo from 2.8.3 to 2.8.4 in /WebUI by @dependabot[bot] in #607
• Bump baseline-browser-mapping from 2.9.19 to 2.11.21 in /WebUI by @dependabot[bot] in #606
• Bump js-yaml from 4.3.1 to 4.3.2 in /WebUI by @dependabot[bot] in #609
• Stop the partnerships file gaining blank lines on every save by @JakeHuneau in #610
• Persist a PATCH to the partnerships file for the XML store by @JakeHuneau in #611
• Make the x509_alias_fallback certificate overlap work in both directions by @JakeHuneau in #612
• Shut down a directory poller's thread pool when the poller stops by @JakeHuneau in #613
• Close streams that were leaked when the work on them failed by @JakeHuneau in #614
• Fix two error paths that failed on their own by @JakeHuneau in #615
• Updating version number and documentation for 4.13.0 release by @uhurusurfa in #617

Full Changelog: v4.12.0...v4.13.0