build(deps): bump adventure from 4.17.0 to 4.18.0

Bumps `adventure` from 4.17.0 to 4.18.0.

Updates `net.kyori:adventure-api` from 4.17.0 to 4.18.0
- [Release notes](https://github.com/KyoriPowered/adventure/releases)
- [Commits](KyoriPowered/adventure@v4.17.0...v4.18.0)

Updates `net.kyori:adventure-text-serializer-legacy` from 4.17.0 to 4.18.0
- [Release notes](https://github.com/KyoriPowered/adventure/releases)
- [Commits](KyoriPowered/adventure@v4.17.0...v4.18.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-adventure = "4.17.0"
+adventure = "4.18.0"
 adventure-bukkit = "4.3.4"
 bstats = "3.1.0"
 [libraries]