chromedriver: 2.38 -> 2.39 (#41580)

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools.

This update was made based on information from https://repology.org/metapackage/chromedriver/versions.

These checks were done:

- built on NixOS
- /nix/store/r7ai8p033gdhncxsfjjy3rb8qmcsvpqx-chromedriver-2.39/bin/chromedriver passed the binary check.
- Warning: no invocation of /nix/store/r7ai8p033gdhncxsfjjy3rb8qmcsvpqx-chromedriver-2.39/bin/.chromedriver-wrapped had a zero exit code or showed the expected version
- 1 of 2 passed binary check by having a zero exit code.
- 0 of 2 passed binary check by having the new version present in output.
- found 2.39 with grep in /nix/store/r7ai8p033gdhncxsfjjy3rb8qmcsvpqx-chromedriver-2.39
- directory tree listing: https://gist.github.com/ed47d14dfe1661b73d2d877b6e790579
- du listing: https://gist.github.com/63dc7bb82190375bce025de50ed2d6fa

pkgs/development/tools/selenium/chromedriver/default.nix

@@ -6,7 +6,7 @@ let
   allSpecs = {
     "x86_64-linux" = {
       system = "linux64";
-      sha256 = "1h7avlns00hd44ayi53lvdj2l85h9higky0jk7bad07hm39nagks";
+      sha256 = "1rkdlf9v5lciaq3yp7cp2vwmca612vngbcnz55ck76jgx6rknh3g";
     };
 
     "x86_64-darwin" = {
@@ -28,7 +28,7 @@ let
 in
 stdenv.mkDerivation rec {
   name = "chromedriver-${version}";
-  version = "2.38";
+  version = "2.39";
 
   src = fetchurl {
     url = "http://chromedriver.storage.googleapis.com/${version}/chromedriver_${spec.system}.zip";