Merge pull request #88 from KyoriPowered/renovate/checkstyle

chore(deps): Update dependency com.puppycrawl.tools:checkstyle to v10.21.1

Author: zml2008

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 version = "1.0"
 
 [versions]
-checkstyle = "10.20.2"
+checkstyle = "10.21.1"
 indra = "3.1.3"
 junit = "5.11.3"
 stylecheck = "0.2.1"