NODE-160, feat: increase block gas limit

[dnjscksdn98]

Description

• increase 20% of block gas limit
  • max total per block: 50,000,000 → 60,000,000
  • max total per tx: 43,333,333 → 52,000,000

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Something else (simple changes that are not related to existing functionality or others)

Checklist

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have made corresponding changes to the documentation.
• I have made new test codes regarding to my changes.
• I have no personal secrets or credentials described on my changes.
• I have run cargo-clippy and linted my code.
• My changes generate no new warnings.
• My changes passed the existing test codes.
• My changes are able to compile.