Issue #18527: Upgrade internal copy of zlib to 1.2.8
diff --git a/Modules/zlib/zlib.map b/Modules/zlib/zlib.map
index f282d36..55c6647 100644
--- a/Modules/zlib/zlib.map
+++ b/Modules/zlib/zlib.map
@@ -66,3 +66,18 @@
     gzclose_r;
     gzclose_w;
 } ZLIB_1.2.3.4;
+
+ZLIB_1.2.5.1 {
+    deflatePending;
+} ZLIB_1.2.3.5;
+
+ZLIB_1.2.5.2 {
+    deflateResetKeep;
+    gzgetc_;
+    inflateResetKeep;
+} ZLIB_1.2.5.1;
+
+ZLIB_1.2.7.1 {
+    inflateGetDictionary;
+    gzvprintf;
+} ZLIB_1.2.5.2;