fix(deps): resolve 3 security vulnerabilities (CVE-2025-71176, CVE-2026-40347, CVE-2018-25031) (#2671)

* fix(deps): upgrade pytest to 9.0.3 to fix CVE-2025-71176

CVE-2025-71176: pytest 9.0.2 and earlier versions have a local
security vulnerability due to predictable temporary directory naming.

- pytest: 8.4.2 → 9.0.3
- Python 3.10+ is now required

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(deps): upgrade python-multipart to 0.0.26 to fix CVE-2026-40347

CVE-2026-40347: python-multipart < 0.0.26 has a denial of
service vulnerability when parsing multipart data.

- python-multipart: 0.0.22 → 0.0.26

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(deps): upgrade swagger-ui to 4.1.3 to fix CVE-2018-25031

CVE-2018-25031: swagger-ui < 4.1.3 has a spoofing vulnerability
where remote attackers can display remote OpenAPI definitions
via crafted URLs.

- swagger-ui: 3.30.0 → 4.1.3
- Updated swagger-ui-bundle.js and swagger-ui.css

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(api): change FastAPI version from "v3" to "3.0.0" for Swagger UI 4.1.3 compatibility

Swagger UI 4.x enforces stricter version format validation.
The version "v3" is not accepted by the new validator.

Changed from:
- version="v3"

To:
- version="3.0.0"

This affects both controller and compute API definitions.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(deps): upgrade swagger-ui to 5.32.4

Fixes "Unable to render this definition" error when loading OpenAPI 3.0
docs. Swagger UI 3.x had incomplete OpenAPI 3.0 support.

- swagger-ui: 3.19.1 → 5.32.4 (latest)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

gns3server/api/server.py

@@ -58,7 +58,7 @@ def get_application() -> FastAPI:
         lifespan=tasks.lifespan,
         title="GNS3 controller API",
         description="This page describes the public controller API for GNS3",
-        version="v3",
+        version="3.0.0",
         docs_url=None,
         redoc_url=None
     )