CI: Workaround upstream issue with .NET editor build not exiting

We force closing the process after 10 s, which should be ample time to generate
the .godot folder.

(cherry picked from commit 306774b)

Author: akien-mga

.github/workflows/ci.yml

@@ -172,7 +172,7 @@ jobs:
           ./godot-artifacts/godot.linuxbsd.editor.x86_64.mono --headless --version
           cd test
           # Need to run the editor so .godot is generated... but it crashes! Ignore that :-)
-          (cd project && (../../godot-artifacts/godot.linuxbsd.editor.x86_64.mono --editor --headless --quit >/dev/null 2>&1 || true))
+          (cd project && (timeout 10 ../../godot-artifacts/godot.linuxbsd.editor.x86_64.mono --editor --headless --quit >/dev/null 2>&1 || true))
           GODOT=../godot-artifacts/godot.linuxbsd.editor.x86_64.mono ./run-tests.sh
 
       - name: Upload artifact