Bump pdf-reader from 2.15.0 to 2.15.1

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](https://github.com/yob/pdf-reader/compare/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
...

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

Gemfile.lock

@@ -170,7 +170,7 @@ GEM
     addressable (2.8.8)
       public_suffix (>= 2.0.2, < 8.0)
     aes_key_wrap (1.1.0)
-    afm (0.2.2)
+    afm (1.0.0)
     angular-rails-templates (1.4.0)
       railties (>= 5.0, < 8.2)
       sprockets (>= 3.0, < 5)
@@ -584,7 +584,7 @@ GEM
       xml-simple
     paypal-sdk-merchant (1.117.2)
       paypal-sdk-core (~> 0.3.0)
-    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)