Bump circuitpython-repl-js from 1.0.0 to 1.2.1

Bumps [circuitpython-repl-js](https://github.com/adafruit/circuitpython-repl-js) from 1.0.0 to 1.2.1.
- [Release notes](https://github.com/adafruit/circuitpython-repl-js/releases)
- [Commits](adafruit/circuitpython-repl-js@3ae7ac1...ac42d94)

---
updated-dependencies:
- dependency-name: circuitpython-repl-js
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -23,6 +23,6 @@
     "xterm-addon-fit": "^0.7.0",
     "xterm-addon-web-links": "^0.8.0",
     "ble-file-transfer-js": "adafruit/ble-file-transfer-js#1.0.2",
-    "circuitpython-repl-js": "adafruit/circuitpython-repl-js#1.0.0"
+    "circuitpython-repl-js": "adafruit/circuitpython-repl-js#1.2.1"
   }
 }