hotfix for fork tests

[dbeal-eth]

this hsould fix fork tests and clear up the develop branch.

note: this PR is only a hotfix to unblock deployments from develop, and the real changes which implement proper transaction handling are in the PR #1504 1559 support

fixes required:

• hardhat mode = london in config (ensures compatibility with fork mode)
• txn field type: 1 (prevents auto usage of EIP 1559 transactions by hardhat which cause errors with curernt code)
• upgrade optimism to develop branch to capture latest hardhat (otherwise integration test fails with invalid txn error)
• force refresh caches on ci

[codecov]

Codecov Report

Merging #1515 (b02a122) into develop (bd54f4e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1515   +/-   ##
========================================
  Coverage    95.21%   95.21%           
========================================
  Files           76       76           
  Lines         1733     1733           
  Branches       557      557           
========================================
  Hits          1650     1650           
  Misses          83       83           

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[jjgonecrypto]

This is effectively the required fix.

[jjgonecrypto]

OK so changes I added:

• Reverted most items back to their original status except the hardhat fork config to use london.
• Fixed issue where checksum logic for CircleCI was being stripped out by mustache: 3575b17
• Rebuilt the lockfile to force a new CI cache of the ops tool
• Fixed the shorts integration tests to use a lower amount of sUSD (this was failing with Amount too large as the fork uses the protocolDAO's holdings of SNX which wasn't sufficient to enable minting a large amount of sUSD): edcbe8e
• Upped the unit test timeout to 90s and minor changes to CollateralShort.js unit test to mitigate the 60s timeout that occurred during one CI run: f4036e1