Updating and merging 881 (stellar#890)

* fix: update bindings to use new soroban-client and ContractSpec class

* chore: remove yarn.lock

* Need to enable base64 in stellar-xdr

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Co-authored-by: Willem Wyndham <willem@ahalabs.dev>

Makefile

@@ -103,7 +103,7 @@ lint:
 typescript-bindings-fixtures: build-test-wasms
 	cargo run -- contract bindings typescript \
 					--wasm ./target/wasm32-unknown-unknown/test-wasms/test_custom_types.wasm \
-					--contract-id CB5T6MLZNWJBUBKEQAUVIG5JJWKYSYVVE2OVN25GMX3VX7CZ7OBAPAU4 \
+					--contract-id CBYMYMSDF6FBDNCFJCRC7KMO4REYFPOH2U4N7FXI3GJO6YXNCQ43CDSK \
 					--network futurenet \
 					--output-dir ./cmd/crates/soroban-spec-typescript/fixtures/test_custom_types \
 					--overwrite

cmd/crates/soroban-spec-typescript/Cargo.toml

@@ -25,7 +25,7 @@ base64 = { workspace = true }
 
 [dependencies.stellar-xdr]
 workspace = true
-features = ["next", "std", "serde"]
+features = ["next", "std", "serde", "base64"]
 
 [dev_dependencies]
 temp-dir = "0.1.11"