fix: unblock npm install by overriding sharp & node-gyp versions

[SinghCod3r]

❗ Problem

Fresh npm install failed with:

• node-gyp 3.8.0 expects Python 2, which triggers the “Missing parentheses in call to 'print'” error under Python 3 / Node 18+.
• sharp 0.24.x (pulled in via Gatsby-v2 plugins) also relies on that old node-gyp toolchain.

🔧 Fix

Added an overrides block in package.json to force modern, Python-3-compatible versions:

"overrides": {
  "sharp": "^0.32.4",
  "node-gyp": "^9.4.0"
}

These versions ship pre-built binaries or build correctly with Python 3, eliminating the install failure.

✅ Testing

1. Removed node_modules and package-lock.json.
2. Ran npm install with Node 18 — completed successfully.
3. Ran gatsby develop — site builds and loads without regressions.

📖 References

• sharp install issues under Node 18
• node-gyp Python 3 compatibility notes

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Please review & merge so new contributors can install the project without extra setup. 🎉

closes #2