message: docs: add Angular 12 support information
  Added angular 12 suppport information in release document
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diff: @@ -107,7 +107,8 @@ The following table provides the status for Angular versions under support.
  Version | Status | Released | Active Ends | LTS Ends
  ------- | ------ | ------------ | ------------ | ------------
  -^11.0.0 | Active | Nov 11, 2020 | May 11, 2021 | May 11, 2022
  +^12.0.0 | Active | May 12, 2021 | Nov 12, 2021 | Nov 12, 2022
  +^11.0.0 | LTS | Nov 11, 2020 | May 11, 2021 | May 11, 2022
  ^10.0.0 | LTS | Jun 24, 2020 | Dec 24, 2020 | Dec 24, 2021
  ^9.0.0 | LTS | Feb 06, 2020 | Aug 06, 2020 | Aug 06, 2021
  