chore(deps): Bump cryptography in /a2a/git_issue_agent

Bumps [cryptography](https://github.com/pyca/cryptography) from 48.0.0 to 49.0.0.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@48.0.0...49.0.0)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 49.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

a2a/git_issue_agent/pyproject.toml

@@ -14,7 +14,7 @@ dependencies = [
     "crewai-tools[mcp]>=1.6.1",
     "urllib3>=2.7.0",   # Indirect; prevents CVE-2025-66418
     "python-multipart>=0.0.32", # Indirect; prevents CVE-2026-24486
-    "cryptography>=48.0.0,<49", # Indirect; prevents CVE-2026-26007
+    "cryptography>=49.0.0,<50", # Indirect; prevents CVE-2026-26007
     "pyasn1>=0.6.4",            # Indirect; prevents CVE-2026-30922
     "starlette>=1.3.1",        # Indirect; prevents CVE-2025-62727
     "pillow>=12.3.0",           # Indirect; prevents CVE-2026-40192