* Adds scrypt support in node 12

Replaces scrypt npm module (no longer maintained and
doesn't work for node 12) for testing standard scrypt with
`crypto.scryptSync` which has been supported since node v10.5.

* Fixes http timeout issues in node 12.

* Updated CI config; Re-generated the package lock file

Co-authored-by: hiranya911 <[email protected]>

…ncies

* Add ESLint rule for curly braces, apply fix

* Remove fix tag from package.json

As commnented on #934 (comment)

Given that node-forge is a 0.x version, npm considers it to be a breaking change, and hence not compatible with the current requirement.

node-forge is also transitively being used by firestore (direct dependency is google-p12-pem), and requiring version ^0.9.0, which means two copies of the library are currently needed. Switching to just one dependency would save 1.7Mib.

* change: Upgraded Firestore dependency to v4

* Upgrading Chai and associated dependencies

* Upgraded Sinon; Fixed affected unit and integration tests

* Fixed a series of TS compilation issues in tests

* Extracted test helper function

* fix: Updated some error checks to use deep.include

Remove unnecessary executive permissions.