build: update Gradle 8.14.5 and AGP 8.13.2

Build-system update only (no app dependency or Kotlin changes):
- Gradle 8.10.2 -> 8.14.5
- Android Gradle Plugin 8.8.1 -> 8.13.2 (requires Gradle 8.13+)

Kotlin/KSP intentionally kept at 2.0.21 / 2.0.21-1.0.27: bumping Kotlin to
2.1.x switches KSP to KSP2, which breaks Room 2.6.1's generated DAO code
(suspend Continuation variance mismatch). The Kotlin/KSP/Room upgrade is
deferred to the app-dependencies phase where Room can move in lockstep.

Author: hawkff

buildSrc/build.gradle.kts

@@ -7,6 +7,6 @@ apply(from = "../repositories.gradle.kts")
 
 dependencies {
     // Gradle Plugins
-    implementation("com.android.tools.build:gradle:8.8.1")
+    implementation("com.android.tools.build:gradle:8.13.2")
     implementation("org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.21")
 }

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.10.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.5-bin.zip
 distributionPath=wrapper/dists
 zipStorePath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME