chore: add 'resends' to cspell dictionary

Word appears in a comment on rollforwardPatch in code_push_client_wrapper —
'the server resends the same patch artifact on rollforward'. Same fix as
shorebirdtech/updater#356 needed in this repo.

Author: bdero

cspell.config.yaml

@@ -115,6 +115,7 @@ words:
   - reimplementation
   - reinit
   - requirepass # From .github dir, doesn't show up in "**" check?
+  - resends # "server resends the same patch on rollforward"
   - reusables
   - rollforward # POST /.../patches/<id>/rollforward — un-rolls-back a patch
   - spawnee