Update to zlib 1.3.1

Since we already pulled in all fixes, this only bumps version/magic numbers
and copyright years. The fixes relevant to OpenBSD are:

- Fix bug in inflateSync() for data held in bit buffer
- Add LIT_MEM define to use more memory for a small deflate speedup
- Add bounds checking to ERR_MSG() macro, used by zError()
- Various portability and appearance improvements

1 files changed, 11 insertions, 1 deletions

diff --git a/lib/libz/ChangeLog b/lib/libz/ChangeLog
index 49de6135d10..e41043e72e6 100644
--- a/lib/libz/ChangeLog
+++ b/lib/libz/ChangeLog
@@ -1,9 +1,19 @@
 
                 ChangeLog file for zlib
 
-Changes in 1.3.0.1 (xx Aug 2023)
+Changes in 1.3.1.1 (xx Jan 2024)
 - 
 
+Changes in 1.3.1 (22 Jan 2024)
+- Reject overflows of zip header fields in minizip
+- Fix bug in inflateSync() for data held in bit buffer
+- Add LIT_MEM define to use more memory for a small deflate speedup
+- Fix decision on the emission of Zip64 end records in minizip
+- Add bounds checking to ERR_MSG() macro, used by zError()
+- Neutralize zip file traversal attacks in miniunz
+- Fix a bug in ZLIB_DEBUG compiles in check_match()
+- Various portability and appearance improvements
+
 Changes in 1.3 (18 Aug 2023)
 - Remove K&R function definitions and zlib2ansi
 - Fix bug in deflateBound() for level 0 and memLevel 9