run on ubuntu latest

Author: KurtGokhan

.github/workflows/test.yml

@@ -58,7 +58,7 @@ jobs:
           #       name: "Performance Tests",
           #       assemblies: "ReactUnity.Tests.Performance",
           #     }
-    runs-on: ${{ matrix.platform || 'ubuntu-20.04' }}
+    runs-on: ${{ matrix.platform || 'ubuntu-latest' }}
     steps:
       - name: Checkout core library
         uses: actions/checkout@v3
@@ -101,7 +101,7 @@ jobs:
         uses: actions/cache@v3
         with:
           path: tests/Library
-          key: Library-${{ matrix.unity.version }}-${{ matrix.platform || 'ubuntu-20.04' }}
+          key: Library-${{ matrix.unity.version }}-${{ matrix.platform || 'ubuntu-latest' }}
 
       - name: Clear React Unity package lock
         run: |