Bump SDK upper bounds.

[davidmorgan]

Fix #4291

[github-actions]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:build	4.0.3	already published at pub.dev
package:build_config	1.2.0	already published at pub.dev
package:build_daemon	4.1.1	already published at pub.dev
package:build_modules	5.1.4	ready to publish	build_modules-v5.1.4
package:build_runner	2.11.0-wip	WIP (no publish necessary)
package:build_test	3.5.5-wip	WIP (no publish necessary)
package:build_web_compilers	4.4.4	ready to publish	build_web_compilers-v4.4.4
package:scratch_space	1.2.0	already published at pub.dev

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

[davidmorgan]

@Markzipan the point of the upper bound is to guard against breaking changes to SDK internals that the web compiler builders depend on ... do you know if 3.11 is far enough along that we can up the bound, or should this wait? Thanks!

[github-actions]

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[Markzipan]

LGTM!