build(deps): bump tower-test from `abb375d` to `a1c277b` #10300

Job	Run time
Subgraph Runner integration tests	3m 0s
Run unit tests	5m 39s
Clippy linting	1m 19s
Run integration tests	3m 58s
Build in release mode	1m 58s
Check rustfmt style	21s
	16m 15s

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