Update structlog requirement from <21.2.0 to <21.6.0

[dependabot]

Updates the requirements on structlog to permit the latest version.

Release notes

Sourced from structlog's releases.

21.5.0

I didn't expect to make this release but @​aucampia and @​airwoodix contributed features that I'm sure will excite many users, so here's Santa Hynek 🎅 with a surprise release.

Changes:

• Added the structlog.processors.LogfmtRenderer processor to render log lines using the logfmt format. #376
• Added the structlog.stdlib.ExtraAdder processor that adds extra attributes of logging.LogRecord objects to the event dictionary. This processor can be used for adding data passed in the extra parameter of the logging module's log methods to the event dictionary. #209 #377
• Added the structlog.processor.CallsiteParameterAdder processor that adds parameters of the callsite that an event dictionary orginated from to the event dictionary. This processor can be used to enrich events dictionaries with information such as the function name, line number and filename that an event dictionary orignated from. #380

Changelog

Sourced from structlog's changelog.

21.5.0 (2021-12-16)

Backward-incompatible changes: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

none

Deprecations: ^^^^^^^^^^^^^

none

Changes: ^^^^^^^^

• Added the structlog.processors.LogfmtRenderer processor to render log lines using the logfmt <https://brandur.org/logfmt>_ format. [#376](https://github.com/hynek/structlog/issues/376) <https://github.com/hynek/structlog/pull/376>_
• Added the structlog.stdlib.ExtraAdder processor that adds extra attributes of logging.LogRecord objects to the event dictionary. This processor can be used for adding data passed in the extra parameter of the logging module's log methods to the event dictionary. [#209](https://github.com/hynek/structlog/issues/209) <https://github.com/hynek/structlog/pull/209>_ [#377](https://github.com/hynek/structlog/issues/377) <https://github.com/hynek/structlog/pull/377>_
• Added the structlog.processor.CallsiteParameterAdder processor that adds parameters of the callsite that an event dictionary orginated from to the event dictionary. This processor can be used to enrich events dictionaries with information such as the function name, line number and filename that an event dictionary orignated from. [#380](https://github.com/hynek/structlog/issues/380) <https://github.com/hynek/structlog/pull/380>_

---

21.4.0 (2021-11-25)

Backward-incompatible changes: ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

none

Deprecations: ^^^^^^^^^^^^^

none

Changes:

... (truncated)

Commits

• 858c5c8 Prepare 21.5.0
• a67b226 Consistency
• 2d66103 Remove bogus link
• b3ad5af Link 209 for context
• 80110ee Add CallsiteParameterAdder processor (#385)
• 0605473 Looks like pepy.tech is not backfilling
• 1948c23 Comment out explainers for less noise in PRs
• 0b5e534 Move types from func definitions into descriptions
• 51132d5 Add an explaining comment to ExtraAdder (#382)
• 9446227 Fixed spelling mistakes in comments (#383)
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

[dependabot]

Superseded by #75.