Build jsr305 with core_current

Using core_current ensures that the module is not using any Android APIs
(e.g. APIs under android.* packages), but only core Java APIs.

Bug: 72206056
Test: m -j jsr305
Change-Id: I4dc7cb31b999e712ca592ef6c85318e62e5a04d9
diff --git a/Android.bp b/Android.bp
index e6d95a3..234a888 100644
--- a/Android.bp
+++ b/Android.bp
@@ -16,7 +16,7 @@
     name: "jsr305",
     host_supported: true,
     hostdex: true,
-    sdk_version: "8",
+    sdk_version: "core_current",
     srcs: ["ri/src/main/java/**/*.java"],
 }