chore(deps)(deps): bump uvicorn from 0.52.4 to 0.53.0 in the web-framework group

[dependabot]

Bumps the web-framework group with 1 update: uvicorn.

Updates uvicorn from 0.52.4 to 0.53.0

Release notes

Sourced from uvicorn's releases.

Version 0.53.0

🌐 Opt-in HTTP/2 support

uvicorn 0.53.0 adds experimental HTTP/2 through zttp, alongside a new zuvloop integration and connection-handling improvements.

uv add uvicorn==0.53.0

• Serve HTTP/1.1 and HTTP/2 with zttp (#2982, #3101). Install zttp, then enable HTTP/2 with --http zttp --http2. Uvicorn negotiates HTTP/2 over TLS with ALPN and supports cleartext prior knowledge.
• HTTP/2 remains experimental. Upgrade-based h2c and WebSockets over HTTP/2 are not supported.

⚙️ More event loop choice

• Run Uvicorn with zuvloop (#3104). Install zuvloop separately and select it explicitly with --loop zuvloop on CPython 3.14 or newer.

🛡️ More reliable connections and proxies

• Honor Connection: close token lists (#3103). Uvicorn now parses comma-separated tokens case-insensitively across HTTP implementations.
• Trust IPv6 loopback proxies by default (#3119). The default FORWARDED_ALLOW_IPS value now includes ::1.
• Keep upgraded WebSockets alive (#3107). Uvicorn cancels the HTTP keep-alive timer when the connection becomes a WebSocket.

Full changelog: 0.52.4...0.53.0

Changelog

Sourced from uvicorn's changelog.

0.53.0 (September 14, 2026)

This release adds experimental HTTP/2 support through zttp. Enable it with --http zttp --http2. Upgrade-based h2c and WebSockets over HTTP/2 are not supported.

Added

• Add experimental HTTP/2 support through zttp (#2982, #3101)
• Add support for zuvloop (#3104)

Fixed

• Handle comma-separated, case-insensitive Connection: close tokens across HTTP implementations (#3103)
• Trust IPv6 loopback in the default FORWARDED_ALLOW_IPS value (#3119)
• Cancel the HTTP keep-alive timer when upgrading to WebSocket (#3107)

Commits

• 421708f Version 0.53.0 (#3136)
• f1a1bff Unset the keep-alive timer when upgrading to WebSocket (#3107)
• 63971ed Document HTTP/2 support (#3130)
• 7d1a005 Remove race from multiprocess health check test (#3128)
• 5ac6265 Add ::1 to FORWARDED_ALLOW_IPS (#3119)
• 098b206 Remove timing race from SIGHUP supervisor test (#3127)
• 968f15e chore(deps): bump the github-actions group with 4 updates (#3113)
• 7d4c08c chore(deps): bump the python-packages group across 1 directory with 11 update...
• fe528a4 Require explicit opt-in for zttp HTTP/2 (#3101)
• fa324a4 chore(deps-dev): bump httpx2 from 2.10.0 to 2.12.0 (#3121)
• Additional commits viewable in compare view

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[github-actions]

✅ PR reviewable size is within recommended limits

[github-actions]

L9 Audit Harness Report

• Generated: 2026-09-21T03:06:51.054572+00:00
• Repo root: /home/runner/work/Cognitive.Engine.Graphs/Cognitive.Engine.Graphs
• Overall result: ✅ PASSED
• Exit code: 0

Step Results

Step	Status	Exit Code	Notes
Architecture Audit	✅ Passed	0
Spec Coverage	✅ Passed	0
Contract Wiring	✅ Passed	0

Architecture Audit Findings

Severity	Count
🔴 CRITICAL	0
🟠 HIGH	0
🟡 MEDIUM	17
🔵 LOW	0

See artifacts/audit_report.md for full details.

Spec Coverage

• ✅ Implemented: 37
• ⚠️ Partial: 9
• ❌ Missing: 0
• Total features: 46

Category	Implemented	Partial	Missing	Total
gates	10	0	0	10
scoring	7	0	0	7
v1.1_node	2	0	0	2
v1.1_edge	2	0	0	2
v1.1_action	0	2	0	2
v1.1_scoring	1	1	0	2
action_handler	0	6	0	6
gds_algorithm	5	0	0	5
research_pattern	10	0	0	10

See artifacts/coverage_report.md for full details.

Next Steps

All checks passed. Safe to merge.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud