ApkInstaller: Supress NewApi for

* Pre-34, this was marked as @hide and @testAPI
* We were using it as a system app with hidden APIs allowed,
  and having added the framework android.jar to gradle
* https://android.googlesource.com/platform/frameworks/base/+/91fa0b12986ac4832568ce2e7280d1da52a959da
  made it public, so lint now complains. Silence that.

Change-Id: I5a1ec9847a25a0798726af3867d7660db1528a00

app/src/main/java/com/stevesoltys/seedvault/restore/install/ApkInstaller.kt

@@ -1,5 +1,6 @@
 package com.stevesoltys.seedvault.restore.install
 
+import android.annotation.SuppressLint
 import android.app.PendingIntent
 import android.app.PendingIntent.FLAG_MUTABLE
 import android.app.PendingIntent.FLAG_UPDATE_CURRENT
@@ -57,6 +58,7 @@ internal class ApkInstaller(private val context: Context) {
         install(cachedApks, installerPackageName)
     }
 
+    @SuppressLint("NewApi")
     private fun install(cachedApks: List<File>, installerPackageName: String?) {
         val sessionParams = SessionParams(MODE_FULL_INSTALL).apply {
             setInstallerPackageName(installerPackageName)