docker(deps): bump caddy from 2.11.4 to 2.11.7 in the docker-images group

[dependabot]

Bumps the docker-images group with 1 update: caddy.

Updates caddy from 2.11.4 to 2.11.7

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[github-actions]

Caddy Rate-Limit Verification — 2026-10-10T05:48:38Z

Verdict: ✅ PASS (7/7 scenarios)

Field	Value
Commit	559033268fe456482bc4c153f8e41d3920c4ccd9
Caddy	v2.11.6 h1:sWxeamdlCZvcH4qeDz8bB0mdxgfYTeqV7HxOjXyIRas=
Plugin SHA	5625512f24f6f59d6f64fb3aafe5eecff0b286db
oha	oha 1.4.7
Runner	Linux X64

Scenarios

ID	Scenario	Status	200 (expected)	429 (expected)	Plugin Δ	p99 (ms)
s1_light	Light load (3 req, under limit)	✅	3 (3–3)	0 (0–0)	0	1
s2_at_limit	Burst at limit (5 req as fast as possible)	✅	5 (5–5)	0 (0–0)	0	1
s3_over_limit	Burst over limit (10 req as fast as possible)	✅	5 (4–6)	5 (4–6)	5	4
s4_sustained	Sustained load (30s @ 1 rps)	✅	15 (10–22)	15 (5–999)	16	8
s5_multi_ip	Multi-IP isolation (3 IPs × 4 req)	✅	12 (12–12)	0 (0–0)	0	0
s6_multi_zone	Multi-zone isolation	✅	test_zone:5/burst_zone:3	test_zone:3/burst_zone:0	tz:3/bz:0	n/a
s7_long_sustained	Long sustained (60s @ 1 rps, sliding-window convergence)	✅	30 (22–42)	30 (15–999)	31	5

Cross-check rule: plugin-reported declined counter delta must match externally-observed HTTP 429 count within ±1.