Update synctools (new uses event builders/processors) and Kotlin/KSP (#1726)

app/src/main/kotlin/at/bitfire/davdroid/resource/LocalCalendar.kt

@@ -67,7 +67,6 @@ class LocalCalendar @AssistedInject constructor(
         val mapped = LegacyAndroidEventBuilder2(
             calendar = androidCalendar,
             event = event,
-            id = null,
             syncId = fileName,
             eTag = eTag,
             scheduleTag = scheduleTag,

app/src/main/kotlin/at/bitfire/davdroid/resource/LocalEvent.kt

@@ -40,7 +40,6 @@ class LocalEvent(
         val eventAndExceptions = LegacyAndroidEventBuilder2(
             calendar = androidEvent.calendar,
             event = data,
-            id = id,
             syncId = fileName,
             eTag = eTag,
             scheduleTag = scheduleTag,

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ androidx-test-junit = "1.3.0"
 androidx-work = "2.10.4"
 bitfire-cert4android = "41009d48ed"
 bitfire-dav4jvm = "f11523619b"
-bitfire-synctools = "fda79a4bd6"
+bitfire-synctools = "c740cb1608"
 compose-accompanist = "0.37.3"
 compose-bom = "2025.09.00"
 dnsjava = "3.6.3"
@@ -28,10 +28,10 @@ glance = "1.1.1"
 guava = "33.5.0-android"
 hilt = "2.57.1"
 # keep in sync with ksp version
-kotlin = "2.2.10"
+kotlin = "2.2.20"
 kotlinx-coroutines = "1.10.2"
 # see https://github.com/google/ksp/releases for version numbers
-ksp = "2.2.10-2.0.2"
+ksp = "2.2.20-2.0.3"
 mikepenz-aboutLibraries = "12.2.4"
 mockk = "1.14.5"
 okhttp = "5.1.0"