Add explicit java version setup (#110)

* add java setup and add some code to test

* Update API pages with v0.24.3

* removing test code

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Co-authored-by: netbirddev <dev@netbird.io>

.github/workflows/generate_api_pages.yml

@@ -24,6 +24,12 @@ jobs:
       - name: Install swagger-codegen
         run: brew install swagger-codegen
 
+      - name: Set up JDK 11
+        uses: actions/setup-java@v2
+        with:
+          java-version: '11'
+          distribution: 'adopt'
+
       - name: Npm install
         run: npm install