Generalize name of "Firmware Updater"

Some Arduino boards have a supplemental hardware module that provides functionality separate from the primary
microcontroller the sketch program runs on.

Enhancements or fixes to the firmware that runs on these supplemental modules may be made over time so it is important
for the users of these boards to have an easy way to update the firmware. Arduino IDE provides a tool for doing this.

At the time the tool was created, the poor choice was made to include the names of the specific modules it supported at
the time in the tool's name. As was inevitable, that list has changed, rendering the tool name no longer accurate.

The immediate problem is that support has been added for updating the "bridge" and radio module on the UNO R4 WiFi. That
module is neither a "WiFi101" nor a "NINA", so the tool name does not reflect the support for the UNO R4 WiFi.

More significant changes in the supported modules are under way and will be introduced in the next release:

- Dropping support for the "WiFi101" module
- Adding support for the module on the Portenta C33 board

Rather than attempting to maintain a regularly changing and overly verbose name that includes the list of every
supported module, it is better to use a name for the tool that only describes its general purpose, leaving the task of
describing the specific supported modules to the documentation.

arduino-ide-extension/src/browser/contributions/upload-firmware.ts

@@ -47,7 +47,7 @@ export namespace UploadFirmware {
       id: 'arduino-upload-firmware-open',
       label: nls.localize(
         'arduino/firmware/updater',
-        'WiFi101 / WiFiNINA Firmware Updater'
+        'Firmware Updater'
       ),
       category: 'Arduino',
     };

i18n/en.json

@@ -250,7 +250,7 @@
       "selectBoard": "Select Board",
       "selectVersion": "Select firmware version",
       "successfullyInstalled": "Firmware successfully installed.",
-      "updater": "WiFi101 / WiFiNINA Firmware Updater"
+      "updater": "Firmware Updater"
     },
     "help": {
       "environment": "Environment",