Bump wagtail-inventory from 3.1 to 3.2 (#14888)

Bumps [wagtail-inventory](https://github.com/cfpb/wagtail-inventory) from 3.1 to 3.2.
- [Release notes](https://github.com/cfpb/wagtail-inventory/releases)
- [Changelog](https://github.com/cfpb/wagtail-inventory/blob/main/CHANGELOG.md)
- [Commits](cfpb/wagtail-inventory@3.1...3.2)

---
updated-dependencies:
- dependency-name: wagtail-inventory
  dependency-version: '3.2'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -281,7 +281,7 @@ wagtail-factories==4.2.1
     # via -r requirements.in
 wagtail-footnotes==0.13.0
     # via -r requirements.in
-wagtail-inventory==3.1
+wagtail-inventory==3.2
     # via -r requirements.in
 wagtail-localize==1.12.2
     # via