Bump version to 2.7.2

Author: zjn0505

fastlane/metadata/android/en-US/changelogs/2.7.2.txt

@@ -0,0 +1,4 @@
+- German translations from xkcDE added to available comics.
+- More xkcd characters joined into the side drawer menu
+- xk3d support to comics No.1 - 880 is added, check that in the up-right menu.
+- Click on comic date is an alternative way to jump to random comics.

fastlane/metadata/android/zh-CN/changelogs/2.7.2.txt

@@ -0,0 +1,3 @@
+- xkcd 众角色入驻侧边栏
+- 漫画 No.1 - 880 加入 xk3d 的支持，请在右上角菜单中查看。
+- 点击漫画日期等同于摇一摇，可以随机跳转到其它漫画

xkcd/build.gradle

@@ -69,8 +69,8 @@ android {
         applicationId "xyz.jienan.xkcd"
         minSdkVersion 16
         targetSdkVersion 29
-        versionCode 64
-        versionName "2.7.1"
+        versionCode 65
+        versionName "2.7.2"
         vectorDrawables.useSupportLibrary = true
         resConfigs "zh-rCN", "de"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"