fix: Bump version of ember-modal-dialog

To get rid of:

```
ERROR in ../rewritten-packages/ember-modal-dialog.6bc4f645/node_modules/ember-modal-dialog/components/liquid-tether-dialog.js 35:0-42
Module not found: Error: ember-modal-dialog is trying to import the app's @ember/string package, but it seems to be missing
 @ ../../.pnpm/@embroider+babel-loader-9@3.1.1_@embroider+core@3.5.6_supports-color@8.1.1_webpack@5.97.1/node_modules/@embroider/babel-loader-9/index.js?{"variant":{"name":"dev","runtime":"browser","optimizeForProduction":false},"appBabelConfigPath":"/Users/michal/ember/ember-cli-addon-docs/node_modules/.embroider/rewritten-app/_babel_config_.js","cacheDirectory":"$TMPDIR/embroider/webpack-babel-loader"}!../../.pnpm/@embroider+webpack@3.2.3_@embroider+core@3.5.6_webpack@5.97.1/node_modules/@embroider/webpack/src/virtual-loader.js?f=%2FUsers%2Fmichal%2Fember%2Fember-cli-addon-docs%2Fnode_modules%2F.embroider%2Frewritten-app%2F-embroider-implicit-modules.js&a=%2FUsers%2Fmichal%2Fember%2Fember-cli-addon-docs%2Ftests%2Fdummy! 12:13-74
 @ ./assets/dummy.js 4:4-47
```

Author: MichalBryxi

package.json

@@ -59,7 +59,7 @@
     "ember-composable-helpers": "^5.0.0",
     "ember-concurrency": "^3.1.1",
     "ember-keyboard": "^9.0.1",
-    "ember-modal-dialog": "^4.1.4",
+    "ember-modal-dialog": "^4.1.5",
     "ember-responsive": "^5.0.0",
     "ember-router-generator": "^2.0.0",
     "ember-router-scroll": "^4.1.2",

pnpm-lock.yaml

@@ -1,2 +1,5 @@
 packages:
-  - 'test-apps/*'
+  - test-apps/*
+
+onlyBuiltDependencies:
+  - ember-modal-dialog