Prepare update license headers for 2022 [update headers]

HEADER

 SonarQube
-Copyright (C) 2009-2021 SonarSource SA
+Copyright (C) 2009-2022 SonarSource SA
 mailto:info AT sonarsource DOT com
 
 This program is free software; you can redistribute it and/or

README.md

 License
 -------
 
-Copyright 2008-2021 SonarSource.
+Copyright 2008-2022 SonarSource.
 
 Licensed under the [GNU Lesser General Public License, Version 3.0](https://www.gnu.org/licenses/lgpl.txt)

build.gradle

   license {
     header = rootProject.file('HEADER')
     strictCheck true
+    encoding = 'UTF-8'
     mapping {
       java = 'SLASHSTAR_STYLE'
       js = 'SLASHSTAR_STYLE'

server/sonar-docs/src/components/Footer.tsx

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or
           src="https://licensebuttons.net/l/by-nc/3.0/us/88x31.png"
         />
       </a>
-      © 2008-2021, SonarSource S.A, Switzerland. Except where otherwise noted, content in this space
+      © 2008-2022, SonarSource S.A, Switzerland. Except where otherwise noted, content in this space
       is licensed under a{' '}
       <a
         href="https://creativecommons.org/licenses/by-nc/3.0/us/"

sonar-ws-generator/src/main/resources/defaultWsClient.vm

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or

sonar-ws-generator/src/main/resources/package-info.vm

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or

sonar-ws-generator/src/main/resources/request.vm

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or

sonar-ws-generator/src/main/resources/webService.vm

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or

sonar-ws-generator/src/main/resources/wsClient.vm

 /*
  * SonarQube
- * Copyright (C) 2009-2021 SonarSource SA
+ * Copyright (C) 2009-2022 SonarSource SA
  * mailto:info AT sonarsource DOT com
  *
  * This program is free software; you can redistribute it and/or