Bump cargo_check_external_types version in Dockerfile

Author: landonxjames

tools/ci-build/Dockerfile

@@ -127,7 +127,7 @@ ARG cargo_deny_version=0.16.4
 ARG cargo_udeps_version=0.1.56
 ARG cargo_hack_version=0.6.27
 ARG cargo_minimal_versions_version=0.1.27
-ARG cargo_check_external_types_version=0.2.0
+ARG cargo_check_external_types_version=0.3.0
 ARG maturin_version=1.5.1
 ARG wasm_pack_version=0.13.1
 ARG cargo_wasmtime_version=34.0.1