chore: bump stark-backend tag

[jonathanpwang]

No description provided.

[github-actions]

group	app.proof_time_ms	app.cycles	app.cells_used	leaf.proof_time_ms	leaf.cycles	leaf.cells_used
verify_fibair	(+20 [+0.9%]) 2,198	513,767	19,376,191	-	-	-
fibonacci_program	(+12 [+0.2%]) 5,291	1,500,095	51,485,080	-	-	-
regex_program	(-87 [-0.6%]) 15,262	1,914,103	165,455,373	-	-	-
ecrecover_program	(-15 [-0.6%]) 2,546	284,567	15,055,723	-	-	-

Commit: c5c8053

Benchmark Workflow