Amp-powered subgraphs: Move Amp configs from ENV to TOML #11198

Job	Run time
Clippy linting	1m 41s
Run unit tests	3m 0s
Subgraph Runner integration tests	2m 34s
Build in release mode	1m 23s
Check rustfmt style	22s
Run integration tests	4m 40s
	13m 40s

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