chore: bump version to v0.1.21 (Rig C) (#43)

Plan 3 Phase 2 — signing-key continuity test. This release is cut from
both AzimovS/meetily and ethereum/meetily on the same content; the
existing v0.1.16 install picks it up via the AzimovS endpoint and
signature-validates against its baked-in pubkey. Pass = key continuity
proven; safe to proceed with transition release.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: AzimovS

frontend/package.json

@@ -1,6 +1,6 @@
 {
     "name": "meetily",
-    "version": "0.1.20",
+    "version": "0.1.21",
     "private": true,
     "main": "electron/main.js",
     "scripts": {

frontend/src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "meetily"
-version = "0.1.20"
+version = "0.1.21"
 description = "A Tauri App for meeting minutes"
 authors = ["Sujith S"]
 license = "MIT"

frontend/src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
     "$schema": "../node_modules/@tauri-apps/cli/config.schema.json",
     "productName": "meetily",
-    "version": "0.1.20",
+    "version": "0.1.21",
     "identifier": "com.meetily.ai",
     "build": {
         "frontendDist": "../out",