chore(deps): update dependency pytest to v9 (#88)

chore(deps): update dependency black to v25.11.0 (#90)

chore(deps): update dependency ipykernel to v7.1.0 (#86)

chore(deps): update dependency ruff to v0.14.2 (#82)

fix(deps): update dependency typer to ^0.20.0 (#85)

chore(deps): update dependency jupytext to v1.18.1 (#84)

feat: add 5 more leetcode problems (#83)

chore(deps): update actions/setup-node action to v6 (#81)

chore(deps): update dependency ipykernel to v7 (#80)

chore(deps): update dependency isort to v7 (#79)