Port CI improvements from EasyPost Java (#25)

Author: nwithan8

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     strategy:
       matrix:
         javaversion: [ "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19" ]
@@ -23,12 +23,32 @@ jobs:
             ${{ runner.os }}-maven-
       - name: Install dependencies
         run: make install
+      - name: Set up JDK for compilation
+        uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: "19" # Always use the latest JDK for building
+      - name: Compile
+        run: make build
       - name: Set up Java ${{ matrix.javaversion }}
         uses: actions/setup-java@v3
         with:
           distribution: "zulu"
           java-version: ${{ matrix.javaversion }}
-      - name: Build and test with Maven
+      - name: Run test with Java ${{ matrix.javaversion }}
+        run: make test
+  coverage:
+    runs-on: ubuntu-20.04
+    steps:
+      - uses: actions/checkout@v3
+      - name: Install dependencies
+        run: make install
+      - name: Set up JDK for compilation
+        uses: actions/setup-java@v3
+        with:
+          distribution: "zulu"
+          java-version: "19" # Always use the latest JDK for building
+      - name: Test coverage
         run: make coverage
       - name: Load Rust cache
         if: github.ref == 'refs/heads/main'
@@ -46,7 +66,7 @@ jobs:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           path-to-lcov: "./coverage.lcov"
   lint:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
       - name: Run CheckStyle checks
@@ -57,7 +77,7 @@ jobs:
           checkstyle_config: easypost_java_style.xml
           tool_name: "style_enforcer"
   security:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
       - name: Load Maven dependencies and CVE database cache