ci: Use mocha for both deno and bun (#4067)

* Use mocha for both deno and bun

* Use any Bun 1.1

* remove build:type dependency in lib-check.yml

* Pin point 1.1.42

* remove packages/bot/.mocharc.json

deno.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://deno.land/x/deno/cli/schemas/config-file.v1.json",
+  "nodeModulesDir": "manual",
+  "lock": false,
+  "unstable": ["sloppy-imports"]
+}