Bump pdf-reader from 2.15.0 to 2.15.1 (#5486)

Bumps [pdf-reader](https://github.com/yob/pdf-reader) from 2.15.0 to 2.15.1.
- [Changelog](https://github.com/yob/pdf-reader/blob/main/CHANGELOG)
- [Commits](yob/pdf-reader@v2.15.0...v2.15.1)

---
updated-dependencies:
- dependency-name: pdf-reader
  dependency-version: 2.15.1
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -473,7 +473,7 @@ GEM
       ast (~> 2.4.1)
       racc
     pdf-core (0.9.0)
-    pdf-reader (2.15.0)
+    pdf-reader (2.15.1)
       Ascii85 (>= 1.0, < 3.0, != 2.0.0)
       afm (>= 0.2.1, < 2)
       hashery (~> 2.0)