Fix: Cast from Abstract Type to Concrete Type. (#6783)

Fixes Cast from Abstract Type to Concrete Type Security Warning.
Removes CodeStyle from Gradle.
Updated to allow Sentry to collect source code.

Author: rjhancock

Diff for: .github/workflows/ci.yml

@@ -2,7 +2,7 @@ name: MegaMek CI with Gradle
 
 on:
   pull_request:
-    branches: [master]
+    branches: [ master ]
 
 env:
   GRADLE_OPTS: "-Dscan.link.VCS=${{ github.event.pull_request.html_url }}"
@@ -13,9 +13,9 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        java-distribution: [temurin]
-        java-version: [17]
+        os: [ ubuntu-latest ]
+        java-distribution: [ temurin ]
+        java-version: [ 17 ]
       fail-fast: false
 
     steps:
@@ -39,7 +39,7 @@ jobs:
 
       - name: Build with Gradle
         working-directory: megamek
-        run: ./gradlew build  -x checkstyleMain -x checkstyleTest --stacktrace --scan
+        run: ./gradlew build sentryUploadSourceBundleJava --stacktrace --scan
 
       - name: Upload Test Logs on Failure
         uses: actions/upload-artifact@v4

Diff for: .github/workflows/nightly-ci.yml

@@ -14,9 +14,9 @@ jobs:
 
     strategy:
       matrix:
-        os: [ubuntu-latest]
-        java-distribution: [temurin]
-        java-version: [17]
+        os: [ ubuntu-latest ]
+        java-distribution: [ temurin ]
+        java-version: [ 17 ]
       fail-fast: false
 
     name: Nightly MegaMek CI ${{ matrix.os }} on ${{ matrix.java-distribution }} JDK ${{ matrix.java-version }}
@@ -50,12 +50,6 @@ jobs:
           name: ${{ matrix.os }}-${{ matrix.java-distribution }}-jdk${{ matrix.java-version }}-ci-failure-logs
           path: megamek/megamek/build/reports/
 
-      #      - name: Upload Zip Artifacts
-      #        uses: actions/upload-artifact@v4
-      #        with:
-      #          name: mm-release-zip-${{ matrix.java-distribution }}-jdk${{ matrix.java-version }}
-      #          path: ./megamek/megamek/build/distributions/*.zip
-
       - name: Upload TarGZ Release
         uses: actions/upload-artifact@v4
         with: