Bump wicked_pdf from 2.8.1 to 2.8.2

Bumps [wicked_pdf](https://github.com/mileszs/wicked_pdf) from 2.8.1 to 2.8.2.
- [Release notes](https://github.com/mileszs/wicked_pdf/releases)
- [Changelog](https://github.com/mileszs/wicked_pdf/blob/master/CHANGELOG.md)
- [Commits](https://github.com/mileszs/wicked_pdf/commits)

---
updated-dependencies:
- dependency-name: wicked_pdf
  dependency-version: 2.8.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -486,7 +486,7 @@ GEM
     mini_magick (4.13.2)
     mini_mime (1.1.5)
     mini_portile2 (2.8.6)
-    minitest (5.26.1)
+    minitest (5.26.2)
     monetize (1.13.0)
       money (~> 6.12)
     money (6.16.0)
@@ -940,8 +940,9 @@ GEM
     websocket-extensions (0.1.5)
     whenever (1.0.0)
       chronic (>= 0.6.3)
-    wicked_pdf (2.8.1)
+    wicked_pdf (2.8.2)
       activesupport
+      ostruct
     wkhtmltopdf-binary (0.12.6.10)
     xml-simple (1.1.8)
     xpath (3.2.0)