Upgraded to WebTools version 2021-06 / 3.22.0.

Author: fvgh

_ext/eclipse-wtp/CHANGES.md

@@ -3,6 +3,8 @@
 We adhere to the [keepachangelog](https://keepachangelog.com/en/1.0.0/) format (starting after version `3.15.1`).
 
 ## [Unreleased]
+### Added
+* Switch to Web Tools Platform release 3.22.0 for Eclipse 4.20.
 
 ## [3.21.0] - 2021-06-07
 ### Added

_ext/eclipse-wtp/gradle.properties

@@ -5,12 +5,12 @@ description=Eclipse's WTP formatters bundled for Spotless
 VER_JAVA=11
 
 # Compile
-VER_ECLIPSE_WTP=2021-03
-VER_SPOTLESS_ECLISPE_BASE=[3.4.2,4.0.0[
-VER_IBM_ICU=[61,68[
-VER_ECLISPE_EMF=[2.16.0,3.0.0[
-VER_ECLIPSE_OSGI_SERVICES=[3.8.0,4.0.0[
-VER_ECLIPSE_FILE_BUFFERS=[3.6.700,4.0.0[
-VER_ECLISPE_JFACE=[3.15.300,4.0.0[
-VER_ECLISPE_EFS=[1.7.600,2.0.0[
-VER_ECLISPE_XSD=[2.15.0,3.0.0[
+VER_ECLIPSE_WTP=2021-06
+VER_SPOTLESS_ECLISPE_BASE=[3.5.0,4.0.0[
+VER_IBM_ICU=[67.1,68[
+VER_ECLISPE_EMF=[2.22.0,3.0.0[
+VER_ECLIPSE_OSGI_SERVICES=[3.10.0,4.0.0[
+VER_ECLIPSE_FILE_BUFFERS=[3.7.0,4.0.0[
+VER_ECLISPE_JFACE=[3.18.0,4.0.0[
+VER_ECLISPE_EFS=[1.9.0,2.0.0[
+VER_ECLISPE_XSD=[2.18.0,3.0.0[