Update synctools to fix #1701 (#1702)

Author: rfc2822

gradle/libs.versions.toml

@@ -20,7 +20,7 @@ androidx-test-junit = "1.3.0"
 androidx-work = "2.10.3"
 bitfire-cert4android = "41009d48ed"
 bitfire-dav4jvm = "cb6065b262"
-bitfire-synctools = "f12d9a4982"
+bitfire-synctools = "fda79a4bd6"
 compose-accompanist = "0.37.3"
 compose-bom = "2025.08.01"
 dnsjava = "3.6.3"