Bump i18next-parser from 5.4.0 to 8.7.0 in /services/idp

Bumps [i18next-parser](https://github.com/i18next/i18next-parser) from 5.4.0 to 8.7.0.
- [Release notes](https://github.com/i18next/i18next-parser/releases)
- [Changelog](https://github.com/i18next/i18next-parser/blob/master/CHANGELOG.md)
- [Commits](https://github.com/i18next/i18next-parser/compare/5.4.0...8.7.0)

---
updated-dependencies:
- dependency-name: i18next-parser
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
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