Bump wkhtmltopdf-binary from 0.12.4 to 0.12.6.5

We're also updating the WickedPdf initializer since wkhtmltopdf prevents
accessing the filesystem by default since version 0.12.6, causing image
tags generated by the `wicked_pdf_image_tag` method not to be rendered.

Bumps [wkhtmltopdf-binary](https://github.com/zakird/wkhtmltopdf_binary_gem) from 0.12.4 to 0.12.6.5.
- [Release notes](https://github.com/zakird/wkhtmltopdf_binary_gem/releases)
- [Changelog](https://github.com/zakird/wkhtmltopdf_binary_gem/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zakird/wkhtmltopdf_binary_gem/commits)

---
updated-dependencies:
- dependency-name: wkhtmltopdf-binary
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Gemfile

@@ -62,7 +62,7 @@ gem "uglifier", "~> 4.2.0"
 gem "view_component", "~> 2.37.0", require: "view_component/engine"
 gem "whenever", "~> 1.0.0", require: false
 gem "wicked_pdf", "~> 2.1.0"
-gem "wkhtmltopdf-binary", "~> 0.12.4"
+gem "wkhtmltopdf-binary", "~> 0.12.6"
 
 source "https://rails-assets.org" do
   gem "rails-assets-leaflet"

Gemfile.lock

@@ -693,7 +693,7 @@ GEM
       chronic (>= 0.6.3)
     wicked_pdf (2.1.0)
       activesupport
-    wkhtmltopdf-binary (0.12.4)
+    wkhtmltopdf-binary (0.12.6.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
 
@@ -802,7 +802,7 @@ DEPENDENCIES
   webdrivers (~> 4.6.0)
   whenever (~> 1.0.0)
   wicked_pdf (~> 2.1.0)
-  wkhtmltopdf-binary (~> 0.12.4)
+  wkhtmltopdf-binary (~> 0.12.6)
 
 BUNDLED WITH
    1.17.2

config/initializers/wicked_pdf.rb

@@ -42,4 +42,5 @@ def render_to_string(*args)
   # Layout file to be used for all PDFs
   # (but can be overridden in `render :pdf` calls)
   # layout: 'pdf.html',
+  enable_local_file_access: true
 }