sbsigntool: pin to openssl_1_1

pkgs/top-level/all-packages.nix

···
 
   efitools = callPackage ../tools/security/efitools { };
 
-  sbsigntool = callPackage ../tools/security/sbsigntool { };
+  sbsigntool = callPackage ../tools/security/sbsigntool {
+    openssl = openssl_1_1;
+  };
 
   gsmartcontrol = callPackage ../tools/misc/gsmartcontrol { };