Bump adventureVersion from 4.24.0 to 4.26.1 in /Plan

Bumps `adventureVersion` from 4.24.0 to 4.26.1.

Updates `net.kyori:adventure-api` from 4.24.0 to 4.26.1
- [Release notes](https://github.com/PaperMC/adventure/releases)
- [Commits](PaperMC/adventure@v4.24.0...v4.26.1)

Updates `net.kyori:adventure-text-serializer-gson` from 4.24.0 to 4.26.1
- [Release notes](https://github.com/PaperMC/adventure/releases)
- [Commits](PaperMC/adventure@v4.24.0...v4.26.1)

Updates `net.kyori:adventure-text-serializer-legacy` from 4.24.0 to 4.26.1
- [Release notes](https://github.com/PaperMC/adventure/releases)
- [Commits](PaperMC/adventure@v4.24.0...v4.26.1)

Updates `net.kyori:adventure-text-minimessage` from 4.24.0 to 4.26.1
- [Release notes](https://github.com/PaperMC/adventure/releases)
- [Commits](PaperMC/adventure@v4.24.0...v4.26.1)

---
updated-dependencies:
- dependency-name: net.kyori:adventure-api
  dependency-version: 4.26.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.kyori:adventure-text-serializer-gson
  dependency-version: 4.26.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.kyori:adventure-text-serializer-legacy
  dependency-version: 4.26.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: net.kyori:adventure-text-minimessage
  dependency-version: 4.26.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Plan/build.gradle

@@ -77,7 +77,7 @@ subprojects {
         mysqlVersion = "9.4.0"
         mariadbVersion = "3.5.6"
         sqliteVersion = "3.42.0.1"
-        adventureVersion = "4.24.0"
+        adventureVersion = "4.26.1"
         hikariVersion = "7.0.2"
         slf4jVersion = "2.0.17"
         geoIpVersion = "4.4.0"