chore: only build update files for the release's own channel

.github/workflows/electron.yml

@@ -148,7 +148,7 @@ jobs:
       # The updater only installs the x64 NSIS build; 32-bit installs get a link.
       # The combined x64+ia32 installer is never uploaded.
       - name: Fix Windows update files
-        run: node scripts/fix-update-info.cjs --drop ia32 --drop termix_windows_nsis.exe release/latest.yml release/beta.yml release/alpha.yml
+        run: node scripts/fix-update-info.cjs --drop ia32 --drop termix_windows_nsis.exe release/latest.yml release/beta.yml
 
       - name: Upload Windows x64 NSIS Installer
         uses: actions/upload-artifact@v7

electron-builder.json

@@ -156,6 +156,6 @@
       "NSAppleEventsUsageDescription": "Termix needs access to control other applications for terminal operations."
     }
   },
-  "generateUpdatesFilesForAllChannels": true,
+  "generateUpdatesFilesForAllChannels": false,
   "msiProjectCreated": "packaging/build/msi-shortcuts.cjs"
 }