Always use Java 15 (#6929)

* Always use Java 15

* Use standard action

* test notarization

* Disable notarization test again

Co-authored-by: Siedlerchr <siedlerkiller@gmail.com>

.github/workflows/deployment.yml

@@ -55,18 +55,10 @@ jobs:
       - name: Run GitVersion
         id: gitversion
         uses: gittools/actions/gitversion/execute@v0.9.4
-      - name: Set up Adotptopen JDK mac
-        uses: joschi/setup-jdk@v2
-        with:
-          # reason: https://bugs.openjdk.java.net/browse/JDK-8238184
-          java-version: 15
-          release_type: ea
-        if: matrix.os == 'macos-latest'
-      - name: Set up JDK for linux and windows
+      - name: Set up JDK
         uses: actions/setup-java@v1
         with:
-          java-version: 14
-        if: matrix.os != 'macos-latest'
+          java-version: 15
       - name: Restore gradle cache
         uses: actions/cache@master
         with: