Update vcr requirement from ~> 4.0 to ~> 5.1

[dependabot-preview]

Updates the requirements on vcr to permit the latest version.

Changelog

Sourced from vcr's changelog.

5.1.0 (Feb 5, 2020)

Full Changelog

• Use RSpec metadata value as cassette name if value is String (#774)
• Include body.class feedback for non-String body error (#756) …
• Made our YAML output more inline with the spec to avoid issues (#782)
• Fix broken build due to Hashdiff deprecation (#758)
• Drop removed Travis directive (#751)
• Repair Shields.io badges (#753)
• Badges - swap out release for tag (#760)
• Removing broken badges (#777)
• Add record_on_error configuration option (#765)
• Clearing up intention of new maintainers request
• Avoid updating the gem gem in system during travis build (#781)
• Updated our version of Aruba (#780)
• Remove link to mailing list (#784)
• Add note about sensitive data in documentation (#783)
• [patch] Fix turning off VCR not working when server thread already started (#764)
• Support runnning structs_spec by itself (#791)
• Changing the license to an ethical license (#792)

5.0.0 (May 27, 2019)

Full Changelog

• [breaking] disabling webmock excon adapter due to issues
• [breaking] change the compressed extension from gz to zz
• [breaking] don't eject cassettes on UnhandledHTTPRequestError
• [breaking] when logging the before_playback placeholder replacement, VCR would state "replacing with " which does not correctly represent what is actually happening, it's now semantically correct
• [breaking] removing more ruby 1.8 weirdness, re: ordered hashes quirk
• [patch] VCR.use_cassettes raises no implicit conversion of nil into Hash vcr/vcr#730
• faster JSON comparison
• recompress_response option+hook
• unignore_hosts option: remove hosts added to @ignored_hosts Set with ignore_hosts
• support ruby 2.6 in test matrix
• support ruby 2.5 in test matrix
• support Typhoeus 1.1 in test matrix
• updating repository meta files

I want to take explicit time here to thank the wonder people who contributed these changes. Some were small and easy while others were challenging and large. They are all meaningful to me and to VCR. Those people are (in no order):

@marshall-lee, @mcfiredrill, @aimerald, @saveriomiroddi, @bwilczek, @felipecsl, @jessedoyle, @raszi, @hdabrows, @nicolasleger, @sckott, @Mehonoshin, @willywg, @sathieu, @skryukov, @joshRpowell, @gregmolnar, @notEthan, @andrew-lewin, and @laserlemon.

If I missed anyone I'm very sorry, you deserve credit.

4.0.0

Full Changelog

• [Feature] Output non-matched headers on error
• [Fix] Allow non-latin charaters in cassette filenames
• [Breaking] Remove deprecated VCR::RSpec::Macros

... (truncated)

Commits

• d9f16c2 Updating the changelog
• 72826ca Bumping to version 5.1.0
• e9338ad Cleaning up some last minute details before the release
• 380bfb1 Exploring changing the license to an ethical license (#792)
• 842b2bf Support runnning structs_spec by itself (#791)
• 35c5186 Fix turning off VCR not working when server thread already start… (#764)
• e65b0d8 Carry "Remove trailing whitespaces from YAML files" (#782)
• 0011856 Add note about sensitive data (#783)
• 596e5eb Remove link to mailing list (#784)
• 4fe5149 Include body.class feedback for non-String body error (#756)
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #29.