Bump com.puppycrawl.tools:checkstyle from 10.20.2 to 10.21.0 #5184

Job	Run time
Detect Modules in PR	5s
Prepare Maven Params For Linux JVM and native Build	1s
Linux - Validate format (17)	5m 1s
PR - Windows - JVM build - Latest Version (17, -P root-modules,cache-modules,spring-modules,http...	53m 18s
PR - Linux - Native build - Latest Version (17, -P root-modules,websockets-modules,test-tooling-...	1h 56m 32s
PR - Linux - JVM build - Latest Version (17, -P root-modules,cache-modules,spring-modules,http-m...	1h 43m 10s
PR - Windows - JVM build - Latest Version (17, -P security-modules,sql-db-modules,websockets-mod...	16m 34s
PR - Linux - Native build - Latest Version (17, -P http-modules,cache-modules )	2h 23m 35s
PR - Linux - JVM build - Latest Version (17, -P security-modules,sql-db-modules,websockets-modul...	1h 19m 24s
PR - Linux - Native build - Latest Version (17, -P security-modules,spring-modules )	2h 4m 19s
PR - Linux - Native build - Latest Version (17, -P sql-db-modules -pl env-info,sql-db/hibernate,...	1h 32m 19s
PR - Linux - Native build - Latest Version (17, -P sql-db-modules -pl env-info,sql-db/reactive-r...	1h 36m 37s
PR - Linux - Native build - Latest Version (17, -P messaging-modules,monitoring-modules )	1h 53m 57s
Detect flaky tests	2s
	15h 44m 54s

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