deps: modernize to AGP 9.2.1 + Gradle 9.6.1 + Kotlin 2.4.0

Coordinated major upgrade that resolves all open Dependabot PRs. AGP 9 has built-in Kotlin support, so the separate org.jetbrains.kotlin.android plugin is removed. Also bumps CI actions (checkout v7, setup-java v5, setup-android v4, upload-artifact v7, action-gh-release v3) and build-tools to 36.0.0. Build + 22 unit tests pass; .aar output unchanged.

Signed-off-by: Alexander Salas Bastidas <ajsb85@firechip.dev>

Author: ajsb85

.github/workflows/ci.yml

@@ -18,18 +18,18 @@ jobs:
     name: Build and test
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-java@v4
+      - uses: actions/checkout@v7
+      - uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: "17"
-      - uses: android-actions/setup-android@v3
+      - uses: android-actions/setup-android@v4
       - name: Install SDK packages
-        run: sdkmanager "platforms;android-35" "build-tools;35.0.0"
+        run: sdkmanager "platforms;android-35" "build-tools;36.0.0"
       - name: Test and assemble
         run: ./gradlew :cobs:testDebugUnitTest :cobs:assembleRelease --console=plain
       - name: Upload AAR artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: cobs_codec_kt-aar
           path: cobs/build/outputs/aar/*.aar

.github/workflows/release-aar.yml

@@ -14,14 +14,14 @@ jobs:
     name: Build AAR and attach to release
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-java@v4
+      - uses: actions/checkout@v7
+      - uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: "17"
-      - uses: android-actions/setup-android@v3
+      - uses: android-actions/setup-android@v4
       - name: Install SDK packages
-        run: sdkmanager "platforms;android-35" "build-tools;35.0.0"
+        run: sdkmanager "platforms;android-35" "build-tools;36.0.0"
       - name: Build AAR and run unit tests
         run: ./gradlew :cobs:testDebugUnitTest :cobs:assembleRelease --console=plain
       - name: Stage artifact
@@ -33,13 +33,13 @@ jobs:
           cp cobs/build/outputs/aar/cobs-release.aar "dist/cobs_codec_kt-${version}.aar"
           echo "version=$version" >> "$GITHUB_OUTPUT"
       - name: Upload as workflow artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: cobs_codec_kt-aar-release
           path: dist/*.aar
       - name: Attach to GitHub release
         if: startsWith(github.ref, 'refs/tags/')
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           files: dist/*.aar
           name: cobs_codec_kt ${{ steps.stage.outputs.version }}

build.gradle.kts

@@ -1,4 +1,4 @@
 plugins {
-    id("com.android.library") version "8.7.3" apply false
-    id("org.jetbrains.kotlin.android") version "2.1.0" apply false
+    // AGP 9 has built-in Kotlin support; no separate Kotlin plugin needed.
+    id("com.android.library") version "9.2.1" apply false
 }

cobs/build.gradle.kts

@@ -2,7 +2,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     id("com.android.library")
-    id("org.jetbrains.kotlin.android")
 }
 
 android {

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.1-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME