Update check.yml

Author: otymko

.github/workflows/check.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java_version: ['11', '13']
+        java_version: ['11']
         os: [ubuntu-latest, windows-latest, macOS-latest]
     steps:
     - uses: actions/checkout@v1