ci(config): upgrade actions for node.js 24

Merge pull request #41 from FradSer/dependabot/uv/black-26.3.1

Merge pull request #40 from FradSer/dependabot/uv/urllib3-2.6.3

build(deps): bump black from 26.3.0 to 26.3.1

build(deps): bump urllib3 from 2.5.0 to 2.6.3

build(deps): bump cryptography from 46.0.3 to 46.0.5

build(deps): bump python-multipart from 0.0.20 to 0.0.22

build(deps): bump starlette from 0.47.2 to 0.49.1

ci(workflow): move coverage enforcement out of global addopts

ci(workflow): add --no-cov to individual test steps

test(tests): add unit tests for services

chore(config): expand gitignore with full template

test(tests): add security test markers

refactor: modernize typing and optimize strings

chore(deps): update lock file with latest dependencies