Update httparty requirement from ~> 0.16.0 to >= 0.16, < 0.22

[dependabot]

Updates the requirements on httparty to permit the latest version.

Changelog

Sourced from httparty's changelog.

0.21.0

• escape filename in the multipart/form-data Content-Disposition header
• Fix request marshaling
• Replace mime-types with mini_mime

0.20.0

Breaking changes

• Require Ruby >= 2.3.0

Fixes

• Marshal.dump fails on response objects when request option :logger is set or :parser is a proc
• Switch :pem option to to OpenSSL::PKey.read to support other algorithms

0.19.1

• Remove use of unary + method for creating non-frozen string to increase compatibility with older versions of ruby

0.19.0

• Multipart/Form-Data: rewind files after read
• add frozen_string_literal pragma to all files
• [Better handling of Accept-Encoding / Content-Encoding decompression (fixes #562)](jnunemaker/httparty#729)

0.18.1

• Rename cop Lint/HandleExceptions to Lint/SuppressedException.
• Encode keys in query params.
• Fixed SSL doc example.
• Add a build status badge.

0.18.0

• Support gzip/deflate transfer encoding when explicit headers are set.
• Support edge case cookie format with a blank attribute.

0.17.3

0.17.2 is broken jnunemaker/httparty#681

0.17.2

• Add Response#nil? deprecetion warning

0.17.1

... (truncated)

Commits

• e731057 Update version
• a2038f2 Add security notice in changelog
• 455c222 Ignore asdf tool-versions
• cdb45a6 Merge pull request from GHSA-5pq7-52mg-hr42
• 243a215 Merge pull request #769 from carlosantoniodasilva/ca-mini-mime
• a577aca Merge pull request #773 from petergoldstein/feature/add_ruby_3_2_to_ci
• 7bb1f94 Adds Ruby 3.2 to the CI matrix. Updates checkout action version.
• 31d3d9d Merge pull request #771 from mishina2228/update-ci-status-badge
• 7737a77 Update CI status badge
• 051c181 escape filename in the multipart/form-data Content-Disposition header
• Additional commits viewable in compare view

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