Add resolutions: typescript 4.1.5 in package.json

debian/patches/0530-typescript-yarnpkg-comapt.patch

@@ -0,0 +1,16 @@
+typescript 4.2 breaks yarn 2 pnp compat plugin
+
+Bug: https://github.com/yarnpkg/berry/pull/2440
+
+--- a/package.json
++++ b/package.json
+@@ -167,7 +167,8 @@
+   },
+   "resolutions": {
+     "chokidar": "^3.4.0",
+-    "monaco-editor": "0.20.0"
++    "monaco-editor": "0.20.0",
++    "typescript": "4.1.5"
+   },
+   "engines": {
+     "node": ">=10.13.0",

debian/patches/series

@@ -19,6 +19,7 @@
 0500-set-webpack-root.patch
 0510-remove-dev-dependencies.patch
 0520-add-system-lib-path-for-webpack.patch
+0530-typescript-yarnpkg-comapt.patch
 0610-source-init-functions.patch
 0620-pid-log-paths.patch
 0630-fix-mail-room-path.patch