Updating Metalava to version 1.2.5

Also regenerating the API txts to match

Bug: 123289576

Test: ./gradlew updateApi && git status

Change-Id: I3e772f3140f4ac4fe2faf419e735423bfbe02f85

diff --git a/paging/common/api/current.txt b/paging/common/api/current.txt
index e5a1266..cf13c47 100644
--- a/paging/common/api/current.txt
+++ b/paging/common/api/current.txt

@@ -1,4 +1,4 @@
-// Signature format: 2.0
+// Signature format: 3.0
 package androidx.paging {
 
   public abstract class DataSource<Key, Value> {
@@ -153,7 +153,7 @@
     method public androidx.paging.PagedList.Config.Builder setPrefetchDistance(@IntRange(from=0) int);
   }
 
-  public static enum PagedList.LoadState {
+  public enum PagedList.LoadState {
     enum_constant public static final androidx.paging.PagedList.LoadState DONE;
     enum_constant public static final androidx.paging.PagedList.LoadState ERROR;
     enum_constant public static final androidx.paging.PagedList.LoadState IDLE;
@@ -165,7 +165,7 @@
     method public void onLoadStateChanged(androidx.paging.PagedList.LoadType, androidx.paging.PagedList.LoadState, Throwable?);
   }
 
-  public static enum PagedList.LoadType {
+  public enum PagedList.LoadType {
     enum_constant public static final androidx.paging.PagedList.LoadType END;
     enum_constant public static final androidx.paging.PagedList.LoadType REFRESH;
     enum_constant public static final androidx.paging.PagedList.LoadType START;