Bump libsignal to v0.67.0.

Enables new CDSI connection logic based on remote config.

app/src/main/java/org/thoughtcrime/securesms/contacts/sync/ContactDiscoveryRefreshV2.kt

@@ -96,7 +96,8 @@ object ContactDiscoveryRefreshV2 {
         SignalDatabase.recipients.getAllServiceIdProfileKeyPairs(),
         Optional.empty(),
         10_000,
-        AppDependencies.libsignalNetwork
+        AppDependencies.libsignalNetwork,
+        RemoteConfig.libsignalRouteBasedCDSILookup
       ) {
         Log.i(TAG, "Ignoring token for one-off lookup.")
       }
@@ -160,7 +161,8 @@ object ContactDiscoveryRefreshV2 {
         SignalDatabase.recipients.getAllServiceIdProfileKeyPairs(),
         Optional.ofNullable(token),
         timeoutMs,
-        AppDependencies.libsignalNetwork
+        AppDependencies.libsignalNetwork,
+        RemoteConfig.libsignalRouteBasedCDSILookup
       ) { tokenToSave ->
         stopwatch.split("network-pre-token")
         if (!isPartialRefresh) {

app/src/main/java/org/thoughtcrime/securesms/util/RemoteConfig.kt

@@ -1134,5 +1134,12 @@ object RemoteConfig {
     hotSwappable = true
   )
 
+  /** Whether or not libsignal-net's CDSI lookups use the new route-based internals or the old ones */
+  val libsignalRouteBasedCDSILookup: Boolean by remoteBoolean(
+    key = "android.libsignal.libsignalRouteBasedCDSILookup",
+    defaultValue = true,
+    hotSwappable = true
+  )
+
   // endregion
 }