Fix nginx-debug binary not found #6640

Job	Run time
Performance Tests	7m 35s
Component Tests	1m 7s
Unit Tests	3m 44s
Lint	54s
Build unsigned snapshot	4m 34s
Build signed snapshot	3m 59s
Build Grafana Dashboard Example	1m 30s
Integration Tests - Official Plus Images (debian, bookworm, r31, debian, /nginx-plus/agent)	3m 34s
Integration Tests - Official OSS Images (alpine, mainline, alpine)	3m 23s
Integration Tests - Official OSS Images (bookworm, stable, debian)	3m 25s
Integration Tests - Official OSS Images (bookworm, mainline, debian)	3m 36s
Integration Tests - Official OSS Images (alpine, stable, alpine)	3m 33s
Integration Tests - Official Plus Images (debian, bookworm, r32, debian, /nginx-plus/agent)	3m 34s
Integration Tests - Official Plus Images (alpine, 3.20, r32, alpine, /nginx-plus/agent)	3m 54s
Integration Tests (rockylinux, 8)	5m 8s
Integration Tests (rockylinux, 9)	5m 9s
Integration Tests (oraclelinux, 9)	5m 33s
Integration Tests (alpine, 3.20)	3m 42s
Integration Tests (amazonlinux, 2)	5m 29s
Integration Tests (almalinux, 8)	5m 1s
Integration Tests (oraclelinux, 8)	5m 46s
Integration Tests (ubuntu, 24.04)	4m 27s
Integration Tests (amazonlinux, 2023)	4m 50s
Integration Tests (debian, bookworm-slim)	4m 29s
Integration Tests (alpine, 3.21)	3m 54s
Integration Tests (alpine, 3.22)	3m 57s
Integration Tests (alpine, 3.23)	4m 9s
Integration Tests (almalinux, 9)	4m 29s
Integration Tests (debian, bullseye-slim)	4m 49s
	1h 59m 14s

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