Upgraded target system version to Android 11

GUT.Schedule/GUTSchedule.Droid/Properties/AndroidManifest.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:versionCode="1" android:versionName="0-development-test" package="com.xfox111.gut.schedule" android:installLocation="auto">
-	<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="29" />
+	<uses-sdk android:minSdkVersion="16" android:targetSdkVersion="30" />
 	<application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/appName" android:roundIcon="@mipmap/ic_launcher_round" android:supportsRtl="true" android:theme="@style/AppTheme.Light"></application>
 	<uses-permission android:name="android.permission.READ_CALENDAR" />
 	<uses-permission android:name="android.permission.WRITE_CALENDAR" />

changelogs/android/en-IN/changelogs/android-changelog.txt

@@ -1 +1,2 @@
 - Fixed semester determination for anonymous schedule
+- Upgraded target system version to Android 11

changelogs/android/ru-RU/changelogs/android-changelog.txt

@@ -1 +1,2 @@
 - Исправлено определение текущего семестра для анонимного расписания
+- Обновлена целевая версия системы до Android 11

changelogs/github.md

@@ -1,2 +1,5 @@
 ## Core
 - Fixed semester determination for anonymous schedule
+
+## Android
+- Upgraded target system version to Android 11