Merge pull request #1399 from ethereum-optimism/dependabot/npm_and_yarn/openzeppelin/contracts-3.4.2

chore(deps-dev): bump @openzeppelin/contracts from 3.4.1 to 3.4.2

Merge pull request #1400 from ethereum-optimism/dependabot/npm_and_yarn/openzeppelin/contracts-upgradeable-3.4.2

chore(deps-dev): bump @openzeppelin/contracts-upgradeable from 3.4.1 to 3.4.2

Version Packages

Develop -> Master PR

l2geth: configurable min L2 gas limit

This commit adds a new config flag `--rollup.minl2gaslimit` that
defaults to `0` and is used to prevent transactions from being ingested
that have a L2 gas limit smaller than the value configured. This
config flag can also be controlled with the env var
`ROLLUP_MIN_L2_GAS_LIMIT`.

Watcher: Even lower num blocks to fetch

Bumps [@openzeppelin/contracts-upgradeable](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable) from 3.4.1 to 3.4.2.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/blob/master/CHANGELOG.md)
- [Commits](https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable/commits/v3.4.2)

---
updated-dependencies:
- dependency-name: "@openzeppelin/contracts-upgradeable"
  dependency-type: direct:development
...
Signed-off-by: dependabot[bot] <support@github.com>

Bumps [@openzeppelin/contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from 3.4.1 to 3.4.2.
- [Release notes](https://github.com/OpenZeppelin/openzeppelin-contracts/releases)
- [Changelog](https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/CHANGELOG.md)
- [Commits](https://github.com/OpenZeppelin/openzeppelin-contracts/commits/v3.4.2)

---
updated-dependencies:
- dependency-name: "@openzeppelin/contracts"
  dependency-type: direct:development
...
Signed-off-by: dependabot[bot] <support@github.com>

Develop -> Master Release PR

Version Packages

Develop To Master PR

Watcher: Make blocks to fetch a config option

Lower NUM_BLOCKS_TO_FETCH in Watcher

Develop -> Master Release PR

Version Packages

Merge Develop into Master

l2geth: update memory usage in geth

This PR updates the memory usage

replica-healthcheck feat: add tx write latency check

Develop -> Master Release PR

Version Packages

Merge Develop into Master

deps: bump to later ethers version (eip1559)

Using EIP-1559 should reduce transaction fees as using
legacy transactions are more expensive based on the
EIP-1559 mechanism. This bumps the version of ethers
across all of the packages.

This also regenerates the `yarn.lock` which upgrades
deps across the codebase. It was not building until
this was done due to mismatched versions in the
`yarn.lock`