Update changelogs for 2021.07.26 release.
+v2021.07.26
+===========
+* Avoid an issue with a hybrid JDK 8/11 setup when using fast run/debug.
+* [Beta channel] IntelliJ: Compatible with IntelliJ CE/UE 2021.2 EAP.
+
v2021.07.12
===========
* [Stable channel] IntelliJ: Compatible with IntelliJ CE/UE 2021.1.
