chore: make chunk wait multiplier configurable #10624

Job	Run time
Protobuf Backward Compatibility	9s
Backward Compatibility	11m 58s
Cargo Nextest (Linux)	11m 57s
Database Migration	11m 36s
Cargo Nextest (Linux Nightly)	11m 54s
Sanity Checks	6m 24s
Cargo Deny	31s
Cargo Clippy	8m 40s
Cargo Fmt	21s
Rust Doctests	11m 0s
Protocol Schema	13m 34s
Genesis Changes	9m 48s
Style	39s
spellcheck	25s
Upgradability	12m 3s
Cargo Audit	20s
Non-default Configuration Builds	1m 19s
Themis	38s
Unused Dependencies	6m 50s
Cargo check publishable packages separately (Linux, linux, ubuntu-latest)	9m 14s
Cargo check publishable packages separately (Windows, win, windows-latest)	2m 27s
Generate Coverage Artifact	0s
Upload Coverage	0s
	2h 11m 47s

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