feat: integrate automated PyPI oldest-release cleanup into wheels publishing workflow

.github/scripts/pypi-cleanup/package.json

@@ -0,0 +1,15 @@
+{
+  "name": "pypi-cleanup",
+  "scripts": {
+    "cleanup": "ts-node src/delete-oldest-release.ts"
+  },
+  "dependencies": {
+    "otplib": "^12.0.1",
+    "playwright": "^1.48.2"
+  },
+  "devDependencies": {
+    "@types/node": "^22.5.1",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.6.3"
+  }
+}