openssl_1_1: 1.1.1n -> 1.1.1o

Fixes command injection in the c_rehash script, which at the same time
is also considered obsolete and should be replaced by openssl rehash.

https://mta.openssl.org/pipermail/openssl-announce/2022-May/000224.html

Fixes: CVE-2022-1292

pkgs/development/libraries/openssl/default.nix

@@ -178,8 +178,8 @@ in {
 
 
   openssl_1_1 = common rec {
-    version = "1.1.1n";
-    sha256 = "sha256-QNzrUaT2pSdb3g5r8g70uRv8Mu1XwFUuLo4VRjNysXo=";
+    version = "1.1.1o";
+    sha256 = "sha256-k4SisFcN2ANYhBRkZ3EV33he25QccSEfdQdtcv5rQ48=";
     patches = [
       ./1.1/nix-ssl-cert-file.patch