fix: use Jest 25

Author: nickserv

.github/workflows/release.yml

@@ -33,7 +33,7 @@ jobs:
 
       - if: ${{ matrix.node == 8 }}
         name: ▶️ Run validate script
-        run: npm run clean && npx npm-run-all test build
+        run: npm run clean && npm install jest@25 && npx npm-run-all test build
 
       - if: ${{ matrix.node != 8 }}
         name: ▶️ Run validate script