Java 11 in build tasks

Author: motorro

.github/workflows/check.yml

@@ -16,10 +16,10 @@ jobs:
       uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    - name: set up JDK 1.8
+    - name: set up JDK 1.11
       uses: actions/setup-java@v1
       with:
-        java-version: 1.8
+        java-version: 1.11
     - name: Cache
       uses: actions/cache@v2
       with:

.github/workflows/release.yaml

@@ -14,10 +14,10 @@ jobs:
         with:
           fetch-depth: 0
           ref: refs/remotes/origin/master
-      - name: set up JDK 1.8
+      - name: set up JDK 1.11
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 1.11
       - name: Cache
         uses: actions/cache@v2
         with: