[Build Failure] Plugin fails to build in CI in Logstash 7.x and above

[robbavey]

CI builds are failing for modern Logstashes:

Fetching mimemagic 0.4.3
Installing mimemagic 0.4.3 with native extensions
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
current directory:
/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/gems/mimemagic-0.4.3/ext/mimemagic
/usr/share/logstash/vendor/jruby/bin/jruby
-I/usr/share/logstash/vendor/jruby/lib/ruby/stdlib/rubygems -rrubygems
/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/gems/rake-13.0.6/exe/rake
RUBYARCHDIR\=/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/extensions/universal-java-11/2.5.0/mimemagic-0.4.3
RUBYLIBDIR\=/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/extensions/universal-java-11/2.5.0/mimemagic-0.4.3
rake aborted!
Could not find MIME type database in the following locations:
["/usr/local/share/mime/packages/freedesktop.org.xml",
"/opt/homebrew/share/mime/packages/freedesktop.org.xml",
"/opt/local/share/mime/packages/freedesktop.org.xml",
"/usr/share/mime/packages/freedesktop.org.xml"]
Ensure you have either installed the shared-mime-info package for your
distribution, or
obtain a version of freedesktop.org.xml and set FREEDESKTOP_MIME_TYPES_PATH to
the location
of that file.
Tasks: TOP => default
(See full trace by running task with --trace)
rake failed, exit code 1
Gem files will remain installed in
/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/gems/mimemagic-0.4.3 for
inspection.
Results logged to
/usr/share/logstash/vendor/jruby/lib/ruby/gems/shared/extensions/universal-java-11/2.5.0/mimemagic-0.4.3/gem_make.out
An error occurred while installing mimemagic (0.4.3), and Bundler cannot
continue.
Make sure that `gem install mimemagic -v '0.4.3' --source
'https://rubygems.org/'` succeeds before bundling.
In Gemfile:
  logstash-input-google_cloud_storage was resolved to 0.11.0, which depends on
    mimemagic