Revert LF fix to uncorrupt images in documentation (apollographql#4438)

* undo lf fix for pngs

the fix in apollographql#4232 accidentally corrupted the pngs, this reverts them
it ignores one that was deleted

* Add missing `text=auto`

Without this, git tries to adjust the line feed for binary
files as well.

* Changelog update

Author: rajington

.gitattributes

@@ -1 +1 @@
-* text eol=lf
+* text=auto eol=lf

CHANGELOG.md

@@ -7,6 +7,10 @@
 - Fixes an issue where the `QueryManager` was accidentally returning cached 
   data for `network-only` queries.  <br/>
   [@danilobuerger](https://github.com/danilobuerger) in [#4352](https://github.com/apollographql/apollo-client/pull/4352)
+- Fixed an issue in the repo `.gitattributes` that was causing binary files
+  to have their line endings adjusted, and cleaned up corrupted documentation 
+  images (ref: https://github.com/apollographql/apollo-client/pull/4232).  <br/>
+  [@rajington](https://github.com/rajington) in [#4438](https://github.com/apollographql/apollo-client/pull/4438)
 
 
 ## Apollo Client (2.4.13)