Set min_sdk_version

This was done via the hard-coded list in build/soong.

Bug: 158059172
Test: m
Change-Id: Ie6dc1f59b459ec01605d796a4d81be04bc1d07da

Android.bp

@@ -359,6 +359,7 @@ java_defaults {
         "contacts-provider-platform-compat-config",
     ],
     libs: [
+        "androidx.annotation_annotation",
         "app-compat-annotations",
         "ext",
         "framework-updatable-stubs-module_libs_api",

libs/protoutil/Android.bp

@@ -55,6 +55,7 @@ cc_library {
 
     export_include_dirs: ["include"],
 
+    min_sdk_version: "30",
     apex_available: [
         "//apex_available:platform",
         "com.android.os.statsd",
@@ -81,5 +82,5 @@ cc_test {
 
     proto: {
         type: "full",
-    }
+    },
 }