gdbm: 1.20 -> 1.23

See release announcements:

- 1.21: https://lists.gnu.org/archive/html/info-gnu/2021-09/msg00001.html
- 1.22: https://lists.gnu.org/archive/html/info-gnu/2021-10/msg00006.html
- 1.23: https://lists.gnu.org/archive/html/info-gnu/2022-02/msg00004.html

pkgs/development/libraries/gdbm/default.nix

@@ -2,11 +2,11 @@
 
 stdenv.mkDerivation rec {
   pname = "gdbm";
-  version = "1.20";
+  version = "1.23";
 
   src = fetchurl {
     url = "mirror://gnu/gdbm/${pname}-${version}.tar.gz";
-    sha256 = "sha256-OurAVkizSCoQotqYa586OAoprWUL6AuYF6Q1+4EUopI=";
+    sha256 = "sha256-dLEIHSH/8TrkvXwW5dblBKTCb3zeHcoNljpIQXS7ys0=";
   };
 
   doCheck = true; # not cross;