dfeshiny 0.5.3 update

[rmbielby]

Pull request overview

This updates the template dashboard to use dfeshiny 0.5.3.

Pull request checklist

Please check if your PR fulfills the following:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been reviewed and added / updated if needed (for bug fixes / features)
• Tests have been run locally and are passing (shinytest2::test_app())
• Code is styled according to tidyverse styling (checked locally with styler::style_dir() and lintr::lint_dir())

What is the current behaviour?

What is the new behaviour?

Anything else

[cjrace]

Sorry I'd missed this! Couple of quick questions added.

Also, I didn't realise we still had a development branch? Worth deleting after this PR to avoid confusion?

[cjrace]

One small thing left in from the accessibility panel

[rmbielby]

One small thing left in from the accessibility panel

I did that and it screwed up the navlist. The additional "Accessibility" isn't from how it's done in the template, it's something I did wrong in dfeshiny function:
https://github.com/dfe-analytical-services/dfeshiny/blob/10839ea6942570856e726072b50c188ef5de684e/R/a11y_panel.R#L110

I've made a PR on dfeshiny to clean it up quickly:

dfe-analytical-services/dfeshiny#83