update nimble vendors list

Author: elcritch

nimble-update-lock.develop

@@ -27,16 +27,20 @@
     "vendor/nim-nat-traversal",
     "vendor/nim-nitro",
     "vendor/nim-presto",
+    "vendor/nim-protobuf-serialization",
+    "vendor/nim-results",
     "vendor/nim-secp256k1",
     "vendor/nim-serialization",
     "vendor/nim-sqlite3-abi",
     "vendor/nim-stew",
     "vendor/nim-taskpools",
+    "vendor/nim-testutils",
     "vendor/nim-toml-serialization",
     "vendor/nim-unittest2",
     "vendor/nim-websock",
     "vendor/nim-zlib",
     "vendor/nimcrypto",
+    "vendor/npeg",
     "vendor/questionable",
     "vendor/stint",
     "vendor/nimbus-build-system/vendor/Nim",