chore: update version to 0.8.0-alpha.1 and upgrade dependencies

- Bump version from 0.7.0 to 0.8.0-alpha.1 in package.json
- Upgrade @rollup/plugin-commonjs from 29.0.0 to 29.0.2
- Upgrade @rollup/plugin-terser from 0.4.4 to 1.0.0
- Upgrade @types/aws-lambda from 8.10.160 to 8.10.161
- Upgrade @types/node from 25.1.0 to 25.5.0
- Upgrade @typescript-eslint/eslint-plugin and @typescript-eslint/parser from 8.54.0 to 8.57.0
- Upgrade jest from 30.2.0 to 30.3.0
- Upgrade rimraf from 6.1.2 to 6.1.3
- Upgrade rollup from 4.57.0 to 4.59.0

Author: mwarman