Add TypeScript 5.5 to TS versions to test against during CI

Author: aryaemami59

.github/workflows/tests.yml

@@ -162,7 +162,7 @@ jobs:
       fail-fast: false
       matrix:
         node: ['20.x']
-        ts: ['4.7', '4.8', '4.9', '5.0', '5.1', '5.2', '5.3', '5.4']
+        ts: ['4.7', '4.8', '4.9', '5.0', '5.1', '5.2', '5.3', '5.4', '5.5']
     steps:
       - name: Checkout repo
         uses: actions/checkout@v4