wip: ci java version updated

Author: muzahidul-opti

.github/workflows/build.yml

@@ -23,10 +23,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - name: set up JDK 8
+    - name: set up JDK 17
       uses: actions/setup-java@v2
       with:
-        java-version: '8'
+        java-version: '17'
         distribution: 'temurin'
         cache: gradle
     - name: Grant execute permission for gradlew

.github/workflows/java.yml

@@ -51,7 +51,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jdk: [8, 9]
+        jdk: [17, 20]
         optimizely_default_parser: [GSON_CONFIG_PARSER, JACKSON_CONFIG_PARSER, JSON_CONFIG_PARSER, JSON_SIMPLE_CONFIG_PARSER]
     steps:
       - name: checkout