Bump version to 1.2.1

Patch release shipping the hardened-runtime microphone fix
(device.audio-input + allow-jit entitlements). The previously released
1.2.0 build could not access the microphone once hardened-runtime signed.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

macos/Makefile

@@ -2,7 +2,7 @@
 
 APP_NAME = WhisperDictate
 APP_BUNDLE = $(APP_NAME).app
-VERSION = 1.2.0
+VERSION = 1.2.1
 
 # Directories
 SRC_DIR = src