refactor periodic update check to use github releases instead of electron-builder (#2259)

- resolves an issue related to electron-builder continuing to download and install updates despite only calling checkForUpdates
- adds indicator to settings / app menu on new version found

src/renderer/features/settings/components/settings-modal.tsx

@@ -9,7 +9,7 @@ export const SettingsContextModal = () => {
 
     return (
         <SettingSearchContext.Provider value={search}>
-            <SettingsHeader setSearch={setSearch} />
+            <SettingsHeader setSearch={setSearch} showUpdateAvailable />
             <SettingsContent />
         </SettingSearchContext.Provider>
     );