ci: stop targeting our fork for BCR PR #43

Performance Regression: -14.05%

❌ 5 regressed benchmarks
✅ 455 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

	Mode	Benchmark	`BASE`	`HEAD`	Efficiency
❌	WallTime	`BM_Vector_PushBack[1000]`	3.7 µs	4.2 µs	-11.58%
❌	WallTime	`BM_Vector_PushBack[10000]`	33.8 µs	39.4 µs	-14.05%
❌	WallTime	`BM_Vector_Reserve[1000]`	3.2 µs	3.6 µs	-12.18%
❌	WallTime	`BM_Vector_Reserve[10000]`	31.2 µs	36.1 µs	-13.43%
❌	WallTime	`BM_Vector_Reserve[100]`	350.5 ns	394 ns	-11.03%

_{Comparing change-bcr-pr-target (d2d05f1) with main (d6b4111)}