chore: update dependencies to latest versions (#6)

Update all dependencies to latest versions with fixed version numbers:
- express: 5.1.0 -> 5.2.1
- react: 19.2.0 -> 19.2.3
- react-dom: 19.2.0 -> 19.2.3
- react-router-dom: 7.8.2 -> 7.11.0
- styled-components: 6.1.15 -> 6.1.19
- @eslint/js: 9.38.0 -> 9.39.2
- @types/node: 24.3.0 -> 25.0.3
- @types/react: 19.0.8 -> 19.2.7
- @types/react-dom: 19.0.3 -> 19.2.3
- @vitejs/plugin-react: 5.0.4 -> 5.1.2
- eslint: 9.38.0 -> 9.39.2
- eslint-plugin-react-hooks: 7.0.0 -> 7.0.1
- eslint-plugin-react-refresh: 0.4.19 -> 0.4.26
- globals: 16.4.0 -> 16.5.0
- prettier: 3.6.2 -> 3.7.4
- typescript: 5.9.2 -> 5.9.3
- vite: 7.1.11 -> 7.3.0

Also removes caret (^) prefixes to use exact versions.

Author: TooAngel