chore: ⬆️ update contributors and theme (#135)

# Description

This PR commits the changes made by running `just run-all`.

This PR needs a quick review.

## Checklist

- [x] Added or updated tests
- [x] Updated documentation
- [x] Ran `just run-all`

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: martonvago

_contributors.qmd

@@ -1,4 +1,4 @@
 These are the people who have contributed by submitting changes through pull requests :tada:
 
 
- [\@lwjohnst86](https://github.com/lwjohnst86), [\@signekb](https://github.com/signekb), [\@martonvago](https://github.com/martonvago)
+ [\@lwjohnst86](https://github.com/lwjohnst86), [\@martonvago](https://github.com/martonvago), [\@signekb](https://github.com/signekb)

_extensions/seedcase-project/seedcase-theme/_extension.yml

@@ -1,7 +1,7 @@
 title: seedcase-theme
 author: Luke W. Johnston
-version: 0.1.0
-quarto-required: ">=1.2.0"
+version: 0.4.1
+quarto-required: ">=1.7.0"
 contributes:
   formats:
     common:
@@ -27,6 +27,7 @@ contributes:
         location: navbar
         type: textbox
       navbar:
+        pinned: true
         background: light
         logo: logos/navbar-logo-seedcase-project.svg
         logo-alt: "Seedcase Project logo: Main page"
@@ -43,7 +44,5 @@ contributes:
             href: https://seedcase-project.org/#acknowledgements
 
     csl: vancouver.csl
-
     format: seedcase-theme-html
-
     brand: _brand.yml