nimble: 0.18.2 -> 0.20.0 (#424549)

Co-authored-by: daylinmorgan <[e-mail]>

pkgs/by-name/ni/nimble/package.nix

···
 buildNimPackage (
   final: prev: {
     pname = "nimble";
-    version = "0.18.2";
+    version = "0.20.0";
 
     src = fetchFromGitHub {
       owner = "nim-lang";
       repo = "nimble";
       rev = "v${final.version}";
-      hash = "sha256-wgzFhModFkwB8st8F5vSkua7dITGGC2cjoDvgkRVZMs=";
+      hash = "sha256-XcXdhEtwnsHZGBTt1xU7HaJK2qyJ0s2xxk2O3XkbTXQ=";
       fetchSubmodules = true;
     };