chore(release): add changelog

Author: Ansonhkg

.changeset/warm-lizards-fry.md

@@ -0,0 +1,7 @@
+---
+'@lit-protocol/lit-client': patch
+'@lit-protocol/networks': patch
+'@lit-protocol/e2e': patch
+---
+
+SDK exposes typed Shiva env helpers (`createShivaEnvVars`, `waitForTestnetInfo`, `SUPPORTED_NETWORKS`) so QA suites can spin up testnets without bespoke env plumbing, and the new `executeWithHandshake` runner automatically retry failures for more stable Lit action execution.