Move uzlib to master branch (#7782)

earlephilhower · web-flow · commit f3521da173e7 · 2020-12-19T10:31:52.000-08:00
Merged uzlib with master instead of referencing a branch.  Makes it
saner for future updates (will be off master instead of off "newstuff"
branch).
diff --git a/tools/sdk/uzlib b/tools/sdk/uzlib
@@ -1 +1 @@
-Subproject commit f0a3a769249f77a23818cb1b2e959c1da367edb2
+Subproject commit 42398df66c02da1cec387b634b6d2f285007a7af
