Update CONTRIBUTING.md

Signed-off-by: Dan Lynn <dan.lynn@fivetran.com>

Author: Dan Lynn

CONTRIBUTING.md

@@ -10,14 +10,14 @@ The TSC is responsible for technical oversight of the SQLMesh project, including
 
 Initial TSC voting members are the project's Maintainers:
 
-| Name                | GitHub Handle | Affiliation    |
-|---------------------|---------------|----------------|
-| Alexander Butler    | z3z1ma        | Harness        |
-| Alexander Filipchik | afilipchik    | Cloud Kitchens |
-| Reid Hooper         | rhooper9711   | Benzinga       |
-| Yuki Kakegawa       | StuffbyYuki   | Jump.ai        |
-| Toby Mao            | tobymao       | Fivetran       |
-| Alex Wilde          | alexminerv    | Minerva        |
+| Name                | GitHub Handle | Affiliation    | Role       |
+|---------------------|---------------|----------------|------------| 
+| Alexander Butler    | z3z1ma        | Harness        | TSC Member |
+| Alexander Filipchik | afilipchik    | Cloud Kitchens | TSC Member |
+| Reid Hooper         | rhooper9711   | Benzinga       | TSC Member |
+| Yuki Kakegawa       | StuffbyYuki   | Jump.ai        | TSC Member |
+| Toby Mao            | tobymao       | Fivetran       | TSC Chair  |
+| Alex Wilde          | alexminerv    | Minerva        | TSC Member |
 
 
 ## Roles