include node_modules so release .zip is deployable

node_modules/@smithy/signature-v4/dist-es/index.js

@@ -0,0 +1,7 @@
+export * from "./SignatureV4";
+export { getCanonicalHeaders } from "./getCanonicalHeaders";
+export { getCanonicalQuery } from "./getCanonicalQuery";
+export { getPayloadHash } from "./getPayloadHash";
+export { moveHeadersToQuery } from "./moveHeadersToQuery";
+export { prepareRequest } from "./prepareRequest";
+export * from "./credentialDerivation";