Bump ejs from 2.5.5 to 3.1.7

Bumps [ejs](https://github.com/mde/ejs) from 2.5.5 to 3.1.7.
- [Release notes](https://github.com/mde/ejs/releases)
- [Commits](mde/ejs@v2.5.5...v3.1.7)

---
updated-dependencies:
- dependency-name: ejs
  dependency-type: direct:production
...

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Author: dependabot[bot]