Add v2026-07-05.2 changelog entry

Author: thomashoneyman

CHANGELOG.md

@@ -10,6 +10,10 @@ New features:
 
 Bugfixes:
 
+Other improvements:
+
+## [v2026-07-05.2](https://github.com/purescript/trypurescript/releases/tag/v2026-07-05.2)
+
 Other improvements:
 - Bump the Stackage resolver from `lts-20.9` to `lts-20.26` (GHC 9.2.5 → 9.2.8), the newest snapshot compatible with `purescript-0.15.15` (#322 by @thomashoneyman)
 - Modernize the server build: `cabal-version: 2.4`, build with `-Wall -Werror` (with attendant cleanup in `server/Main.hs`), remove unused dependencies and the redundant `Setup.hs` (#322 by @thomashoneyman)