build(deps): bump tower-test from `abb375d` to `a1c277b` #10280

Job	Run time
Subgraph Runner integration tests	2m 56s
Run unit tests	5m 33s
Run integration tests	3m 51s
Check rustfmt style	24s
Clippy linting	3m 18s
Build in release mode	1m 15s
	17m 17s

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