update the topics section of several pubspecs

[devoncarew]

• update the topics section of several pubspecs

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[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:os_detect	2.0.3	ready to publish	os_detect-v2.0.3
package:args	2.6.1-wip	WIP (no publish necessary)
package:async	2.12.0	already published at pub.dev
package:characters	1.4.0	already published at pub.dev
package:collection	1.20.0-wip	WIP (no publish necessary)
package:convert	3.1.2	already published at pub.dev
package:crypto	3.0.6	already published at pub.dev
package:fixnum	1.1.1	already published at pub.dev
package:lints	5.1.1	already published at pub.dev
package:logging	1.3.0	already published at pub.dev
package:path	1.9.2-wip	WIP (no publish necessary)
package:platform	3.1.6	already published at pub.dev
package:typed_data	1.4.0	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions]

PR Health

Breaking changes ⚠️

Package	Change	Current Version	New Version	Needed Version	Looking good?
collection	Breaking	1.19.1	1.20.0-wip	2.0.0 Got "1.20.0-wip" expected >= "2.0.0" (breaking changes)	⚠️
crypto	None	3.0.6	3.0.6	3.0.6	✔️
logging	None	1.3.0	1.3.0	1.3.0	✔️
path	None	1.9.1	1.9.2-wip	1.9.1	✔️

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API leaks ⚠️

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API.

Package	Leaked API symbols
path	InternalStyle

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[devoncarew]

It looks like os_detect is ready to be published; I'll do that after this PR lands.