Move playwright-common wait-on from devDependencies to dependencies

as it is needed by the `playwright-screenshots.sh` script which is exposed to dependants

Author: t3chguy

packages/playwright-common/package.json

@@ -24,8 +24,7 @@
     "devDependencies": {
         "@element-hq/element-web-module-api": "workspace:*",
         "@types/lodash-es": "^4.17.12",
-        "typescript": "^5.8.2",
-        "wait-on": "^9.0.4"
+        "typescript": "^5.8.2"
     },
     "dependencies": {
         "@axe-core/playwright": "^4.10.1",
@@ -35,6 +34,7 @@
         "mailpit-api": "^1.2.0",
         "strip-ansi": "^7.1.0",
         "testcontainers": "^11.0.0",
+        "wait-on": "^9.0.4",
         "yaml": "^2.7.0"
     },
     "peerDependencies": {