CI: Build "unsupported" htop with ubuntu-latest

Use the "ubuntu-latest" image to build the "unsupported" version of
htop.

Author: Explorer09

.github/workflows/ci.yml

@@ -128,7 +128,7 @@ jobs:
 
   build-unsupported-latest-gcc:
     # build as if we were on an unsupported platform
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
     - name: Install Dependencies