chore: remove dependencies not in module

Author: durran

.github/dependabot.yml

@@ -17,12 +17,6 @@ updates:
       # chai is esmodule only.
       - dependency-name: "chai"
         versions: [">=5.0.0"]
-      # sinon-chai 4.x+ supports chai 5.x+.
-      - dependency-name: "sinon-chai"
-        versions: [">=4.0.0"]
-      # chalk is esmodule only.
-      - dependency-name: "chalk"
-        versions: [">=5.0.0"]
       # nyc is Node18+ only starting on [email protected].
       - dependency-name: "nyc"
         versions: [">=16.0.0"]