Add CI for java 19+20 (#17)

* Add CI for java 19+20

* Also update codecov

Author: dampcake

.github/workflows/ci.yml

@@ -11,19 +11,20 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18 ]
+        java: [ 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 ]
     env:
       JAVA: ${{ matrix.java }}
     name: Java ${{ matrix.java }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Setup Java
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v2
       with:
+        distribution: 'zulu'
         java-version: ${{ matrix.java }}
     - name: Test
       run: mvn -B test jacoco:report
-    - uses: codecov/codecov-action@v1
+    - uses: codecov/codecov-action@v3
       with:
         env_vars: JAVA
   deploy:
@@ -32,10 +33,11 @@ jobs:
     if: github.ref == 'refs/heads/master'
     name: Deploy
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Setup Java
-      uses: actions/setup-java@v1
+      uses: actions/setup-java@v3
       with:
+        distribution: 'zulu'
         java-version: 8
     - name: Deploy
       env: