zlib1g/stable,now 1:1.2.11.dfsg-1 amd64 [установлен]
  библиотека сжатия

zlib1g-dbg/stable 1:1.2.11.dfsg-1 amd64
  compression library - development

zlib1g-dev/stable 1:1.2.11.dfsg-1 amd64
  библиотека сжатия (файлы для разработчиков)

zlibc/stable 0.9k-4.3 amd64
  An on-fly auto-uncompressing C library

zopfli/stable 1.0.2-1 amd64
  архиватор совместимый с zlib (gzip, deflate)

zstd/stable 1.3.8+dfsg-3 amd64
  fast lossless compression algorithm -- CLI tool

zziplib-bin/stable 0.13.62-3.2 amd64
  library providing read access on ZIP-archives - binaries

du8@debian-pav:/opt/PostgreSQL/10/lib$ ldd ./libpng16.so.16 
./libpng16.so.16: /opt/PostgreSQL/10/lib/libz.so.1: version `ZLIB_1.2.9' not found (required by ./libpng16.so.16)
  linux-vdso.so.1 (0x00007ffe9ede9000)
  libz.so.1 => /opt/PostgreSQL/10/lib/libz.so.1 (0x00007f0533a70000)
  libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f05338d8000)
  libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f0533717000)
  /lib64/ld-linux-x86-64.so.2 (0x00007f0533cc7000)

/opt/PostgreSQL/10/lib/libz.so.1

0000000000000000 A ZLIB_1.2.0
0000000000000000 A ZLIB_1.2.0.2
0000000000000000 A ZLIB_1.2.0.8
0000000000000000 A ZLIB_1.2.2
0000000000000000 A ZLIB_1.2.2.3
0000000000000000 A ZLIB_1.2.2.4
0000000000000000 A ZLIB_1.2.3.3
0000000000000000 A ZLIB_1.2.3.4
0000000000000000 A ZLIB_1.2.3.5
0000000000000000 A ZLIB_1.2.5.1
0000000000000000 A ZLIB_1.2.5.2
0000000000000000 A ZLIB_1.2.7.1