docs: revert explicit pnpm and TS versions, add suggested note

.github/CONTRIBUTING.md

@@ -54,14 +54,13 @@ gh repo clone wagmi-dev/abitype
 
 ## Installing Node.js and pnpm
 
-ABIType uses [pnpm](https://pnpm.io) as its package manager. You need to install **Node.js v16 or higher**, **pnpm exactly v8.3.1** and **TypeScript exactly v5.0.4**.
+ABIType uses [pnpm](https://pnpm.io) as its package manager. You need to install **Node.js v16 or higher** and **pnpm v7 or higher**.
 
 You can run the following commands in your terminal to check your local Node.js and npm versions:
 
 ```bash
 node -v
 pnpm -v
-pnpm tsc -v
 ```
 
 If the versions are not correct or you don't have Node.js or pnpm installed, download and follow their setup instructions:
@@ -83,6 +82,8 @@ pnpm install
 
 After the install completes, pnpm links packages across the project for development and [git hooks](https://github.com/toplenboren/simple-git-hooks) are set up.
 
+> **Note:** In case you have to install new packages or upgrade packages make sure to use **pnpm@8.3.1** and **typescript@5.0.4**
+
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