geckodriver: cargo: bump version number to 0.12.0

Happy new year!

Source-Repo: https://github.com/mozilla/geckodriver
Source-Revision: 45f124564d90effe28973764241c750a724662fe

--HG--
extra : rebase_source : e3e3939ca1d138b3d3f035ef9ca93a36ee5bb091

testing/geckodriver/Cargo.lock

@@ -1,6 +1,6 @@
 [root]
 name = "geckodriver"
-version = "0.11.1"
+version = "0.12.0"
 dependencies = [
  "chrono 0.2.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.19.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -663,6 +663,7 @@ dependencies = [
 "checksum utf8-ranges 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a1ca13c08c41c9c3e04224ed9ff80461d97e121589ff27c753a16cb10830ae0f"
 "checksum uuid 0.1.18 (registry+https://github.com/rust-lang/crates.io-index)" = "78c590b5bd79ed10aad8fb75f078a59d8db445af6c743e55c4a53227fc01c13f"
 "checksum vec_map 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "cac5efe5cb0fa14ec2f84f83c701c562ee63f6dcc680861b21d65c682adfb05f"
+"checksum webdriver 0.17.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b6a882a0a869b3c24ea501e1219c5385f0e085773ffbbc3217f8c2b720cb7b03"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
 "checksum winreg 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e63857fb213f619b4c4fff86b158285c76766aac7e7474967e92fb6dbbfeefe9"

testing/geckodriver/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "geckodriver"
-version = "0.11.1"
+version = "0.12.0"
 authors = [
   "James Graham <james@hoppipolla.co.uk>",
   "Andreas Tolfsen <ato@mozilla.com>",