Add Conrad and Thorsten to .mailmap file (#6691)

Thorsten Ball created 

Follow-up to #4138.

Release Notes:

- N/A

Change summary

.mailmap | 5 +++++
1 file changed, 5 insertions(+)

Detailed changes

.mailmap 🔗 

@@ -37,3 +37,8 @@ Nathan Sobo <nathan@zed.dev> <nathan@warp.dev>
 Nathan Sobo <nathan@zed.dev> <nathansobo@gmail.com>
 Piotr Osiewicz <piotr@zed.dev>
 Piotr Osiewicz <piotr@zed.dev> <24362066+osiewicz@users.noreply.github.com>
+Conrad Irwin <conrad@zed.dev>
+Conrad Irwin <conrad@zed.dev> <conrad.irwin@gmail.com>
+Thorsten Ball <thorsten@zed.dev>
+Thorsten Ball <thorsten@zed.dev> <mrnugget@gmail.com>
+Thorsten Ball <thorsten@zed.dev> <me@thorstenball.com>