build(deps): bump tower-test from `abb375d` to `a1c277b` #10299

Job	Run time
Subgraph Runner integration tests	3m 12s
Run unit tests	6m 7s
Run integration tests	4m 10s
Clippy linting	2m 40s
Check rustfmt style	26s
Build in release mode	3m 3s
	19m 38s

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