Public sync: A new client is created for each CCA

[gnarea]

Instead of grouping cargo collection calls by the recipient of the CCA, like we do when delivering cargo.

relaynet-courier-android/app/src/main/java/tech/relaycorp/courier/domain/client/CargoCollection.kt

Lines 47 to 49 in 887623a

	private suspend fun collectAndStoreCargoForCCA(cca: StoredMessage) {
	val client = clientBuilder.build(
	cca.recipientAddress.value,

We should improve this at some point to improve performance, but it's certainly not a top priority in the grand scheme of things.