Update elasticsearch requirement from >= 5.0, < 6.2 to >= 5.0, < 7.4

[dependabot-preview]

Updates the requirements on elasticsearch to permit the latest version.

Release notes

Sourced from elasticsearch's releases.

7.3.0

This version supports Elasticsearch server version 7.3.0.
It has the following changes:

Client

• Add note to readme about the default port value
• Add note about exception to default port rule when connecting using Elastic Cloud ID
• Cluster name is variable in cloud id

XPACK

• Support allow_no_match parameter in stop_data_frame_transform
• Add allow_no_match to get_data_frame_transform API
• Add missing headers
• Support get_builtin_privileges API
• Update tests for changed xpack paths
• test:integration task in xpack gem shouldn't do anything in favor of test:rest_api

Changelog

Sourced from elasticsearch's changelog.

7.3.0

Client

• Add note to readme about the default port value
• Add note about exception to default port rule when connecting using Elastic Cloud ID
• Cluster name is variable in cloud id

XPACK

• Support allow_no_match parameter in stop_data_frame_transform
• Add allow_no_match to get_data_frame_transform API
• Add missing headers
• Support get_builtin_privileges API
• Update tests for changed xpack paths
• test:integration task in xpack gem shouldn't do anything in favor of test:rest_api

7.2.0

Client

• Support User-Agent header client team specification
• Improve code handling headers
• Handle headers when using JRuby and Manticore
• Rename method for clarity
• Test selecting connections using multiple threads
• Synchronize access to the connections collection and mutation of @​current instance variable
• Fix specs for selecting a connection
• Further fixes to specs for testing selecting connections in parallel
• Support providing a cloud id
• Allow a port to be set with a Cloud id and use default if no port is provided
• Remove unnecessary check for cloud_id when setting default port
• Add documentation for creating client with cloud_id
• Allow compression with Faraday and supported http adapters
• Put development gem dependencies in gemspec
• No reason to use ! for decompress method name
• Check for the existence of headers before checking headers
• Apply compression headers manually based on general :compression option
• Use GZIP constant
• Group tests into their transport adapters
• Support compression when using Curb adapter
• Support compression when using Manticore adapter with JRuby
• Fix Curb unit test, expecting headers to be merged and not set
• Update test descriptions for compression settings
• Add documentation of 'compression' option on client
• Improve client documentation for compression option
• Centralize header handling into one method
• Only add Accept-Encoding header if compression option is true

API

... (truncated)

Commits

• f444298 Release 7.3.0
• 62773a2 Rename LICENSE.txt to LICENSE
• bd2d2f8 Update LICENSE file name and references
• b11d19e Update license text in README's
• b7cc49a [COMMON] Remove repeated section in docs
• a4e7fed [COMMON] Move docs files from elasticsearch repo to here
• f8e3476 [CI] Updates to test against Elasticsearch 7.3.0
• 6596369 [CLIENT] Cluster name is variable in cloud id
• 4679145 Use shortened license header in files
• 72a1962 [CLIENT] Add note about exception to default port rule when connecting using ...
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #15.