removed redundant imports from Request.java

updated dependencies (lombok, mockito) in build.gradle to support up to and including JDK 15
changed build_gradle.yml to support both JDK 8 & 11

Author: steve-donovan

.github/workflows/build_gradle.yml

@@ -13,12 +13,18 @@ jobs:
 
     runs-on: ubuntu-latest
 
+    strategy:
+      matrix:
+        java: [ '8', '11' ]
+    env:
+      JDK_VERSION: ${{ matrix.java }}
+    name: Java ${{ matrix.java }} build
     steps:
-    - uses: actions/checkout@v2
-    - name: Set up JDK 8
-      uses: actions/setup-java@v2
+    - uses: actions/checkout@v3
+    - name: Set up Java
+      uses: actions/setup-java@v3
       with:
-        java-version: '8'
+        java-version: ${{ matrix.java }}
         distribution: 'adopt'
         cache: gradle
     - name: Grant execute permission for gradlew

build.gradle

@@ -26,8 +26,11 @@ repositories {
 
 dependencies {
     implementation 'com.google.code.gson:gson:2.9.0'
-    implementation "org.projectlombok:lombok:1.16.16"
-    testImplementation "org.mockito:mockito-core:2.12.0"
+    compileOnly "org.projectlombok:lombok:1.18.24"
+    annotationProcessor 'org.projectlombok:lombok:1.18.24'
+    testCompileOnly 'org.projectlombok:lombok:1.18.24'
+    testAnnotationProcessor 'org.projectlombok:lombok:1.18.24'
+    testImplementation 'org.mockito:mockito-core:4.6.1'
     testRuntimeOnly "org.slf4j:slf4j-api:1.7.10"
     testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
     testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'

src/main/java/com/amadeus/Request.java

@@ -1,8 +1,5 @@
 package com.amadeus;
 
-import com.amadeus.Constants;
-
-import com.google.gson.JsonElement;
 import java.io.IOException;
 import java.net.HttpURLConnection;
 import java.net.URL;