Bump _data/popolo-data from `3b98369` to `3d9d15e`
Bump _data/popolo-data from `3b98369` to `3d9d15e`

Bumps [_data/popolo-data](https://github.com/SomethingNewUK/popolo-data) from `3b98369` to `3d9d15e`.
- [Release notes](https://github.com/SomethingNewUK/popolo-data/releases)
- [Commits](https://github.com/SomethingNewUK/popolo-data/compare/3b98369c4e73ee96c5810d7fa1696fa21add3173...3d9d15ebe7cafac5ef121ae02b8159de4422888c)

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
SomethingNewUK/somethingnewuk.github.io,SomethingNewUK/somethingnewuk.github.io