Revert minsdk to sdk29

* Sadly my HW-SCM09 is still Android Q and seems it will never upgrade, damn

* Huawei sucks

app/build.gradle

@@ -34,7 +34,7 @@ android {
 
     defaultConfig {
         applicationId "io.github.nekoinverter.ehviewer"
-        minSdkVersion 31
+        minSdkVersion 29
         targetSdkVersion 32
         versionCode 114516
         versionName "1.7.26.7"

native/build.gradle

@@ -8,7 +8,7 @@ android {
     ndkVersion "24.0.8215888"
 
     defaultConfig {
-        minSdkVersion 31
+        minSdkVersion 29
         targetSdkVersion 32
         consumerProguardFiles 'proguard-rules.pro'