Bump pdf-reader from 2.11.0 to 2.12.0 (#475)

Bumps [pdf-reader](https://github.com/yob/pdf-reader) from 2.11.0 to 2.12.0.
- [Changelog](https://github.com/yob/pdf-reader/blob/main/CHANGELOG)
- [Commits](yob/pdf-reader@v2.11.0...v2.12.0)

---
updated-dependencies:
- dependency-name: pdf-reader
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -30,7 +30,7 @@ GEM
     parser (3.2.2.4)
       ast (~> 2.4.1)
       racc
-    pdf-reader (2.11.0)
+    pdf-reader (2.12.0)
       Ascii85 (~> 1.0)
       afm (~> 0.2.1)
       hashery (~> 2.0)