Adjust to prysm batch size

[MarekM25]

Changes

Adjust our batch size to prysm
Reference issue: prysmaticlabs/prysm#11982

Types of changes

What types of changes does your code introduce?

• Bugfix (a non-breaking change that fixes an issue)
• New feature (a non-breaking change that adds functionality)
• Breaking change (a change that causes existing functionality not to work as expected)
• Optimization
• Refactoring
• Documentation update
• Build-related changes
• Other: adjust our config to work better with Prysm

Testing

Requires testing

• Yes
• No

If yes, did you write tests?

• Yes
• No

Notes on testing

I did manual testing. It works well with prysm