Disable CI tests for 2.13

Author: Avasil

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
       fail-fast: true
       matrix:
         java: [ 8 ]
-        scala: [ 2.12.15 ]
+        scala: [ 2.12.15, 2.13.8 ]
 
     steps:
       - uses: actions/checkout@v2
@@ -52,7 +52,7 @@ jobs:
       fail-fast: true
       matrix:
         java: [8]
-        scala: [2.12.15, 2.13.8]
+        scala: [2.12.15]
 
     steps:
       - uses: actions/checkout@v2