Update webbrowser requirement to 0.3.0

Updates the requirements on [webbrowser](https://github.com/amodm/webbrowser-rs) to permit the latest version.
- [Release notes](https://github.com/amodm/webbrowser-rs/releases)
- [Commits](https://github.com/amodm/webbrowser-rs/commits)

Signed-off-by: dependabot[bot] <support@dependabot.com>

Author: dependabot-support

Cargo.toml

@@ -32,4 +32,4 @@ url_serde = "0.2.0"
 fern = "0.5.1"
 structopt = "0.2.10"
 structopt-derive = "0.2.10"
-webbrowser = "0.2.2"
+webbrowser = "0.3.0"