build(deps): bump io.papermc.paperweight.userdev from 1.5.13 to 1.5.15

Bumps io.papermc.paperweight.userdev from 1.5.13 to 1.5.15.

---
updated-dependencies:
- dependency-name: io.papermc.paperweight.userdev
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ minecraftserver = "1.20.4"
 googlejavaformat = "1.17.0"
 cloud = "2.0.0-beta.4"
 [plugins]
-userdev = { id = "io.papermc.paperweight.userdev", version = "1.5.13" }
+userdev = { id = "io.papermc.paperweight.userdev", version = "1.5.15" }
 runpaper = { id = "xyz.jpenilla.run-paper", version = "2.2.3" }
 shadow = { id = "com.github.johnrengelman.shadow", version = "8.1.1" }
 lombok = { id = "io.freefair.lombok", version = "8.6" }