Do a 'yarn upgrade' before otherwise broken uplift

This upgrade is necessary so the following Theia version uplift still
works with the electron yarn commands.

Cap the fontawesome-svg-core version to less than 1.3.0. Without this
change, the hereby upgrade leads to a broken yarn build. This is despite
requesting for a version that remains compatible with 1.2.17. So a yarn
upgrade without this adjustment lends the use of v1.3.0, which breaks the
build. Below [1] flags that breaking version as deprecated, and the
later versions are way more major uplifts (6.x.y).

[1]https://www.npmjs.com/package/@fortawesome/fontawesome-svg-core?activeTab=versions

Signed-off-by: Marco Miller <marco.miller@ericsson.com>

packages/react-components/package.json

@@ -13,7 +13,7 @@
     "style"
   ],
   "dependencies": {
-    "@fortawesome/fontawesome-svg-core": "^1.2.17",
+    "@fortawesome/fontawesome-svg-core": "^1.2.17 <1.3.0",
     "@fortawesome/free-solid-svg-icons": "^5.8.1",
     "@fortawesome/react-fontawesome": "^0.1.4",
     "@vscode/codicons": "^0.0.29",