chore(deps-dev): update a2a-sdk requirement from <1.0.0,>=0.3.0 to >=0.3.0,<2.0.0

[dependabot]

Updates the requirements on a2a-sdk to permit the latest version.

Release notes

Sourced from a2a-sdk's releases.

v1.0.2

1.0.2 (2026-04-24)

Features

• helpers: add non-text Part, Message, and Artifact helpers (#1004) (cfdbe4c)

Bug Fixes

• proto: use field.label instead of is_repeated for protobuf compatibility (#1010) (7d197db)
• server: deliver push notifications across all owners (#1016) (c24ae05)

Changelog

Sourced from a2a-sdk's changelog.

1.0.2 (2026-04-24)

Features

• helpers: add non-text Part, Message, and Artifact helpers (#1004) (cfdbe4c)

Bug Fixes

• proto: use field.label instead of is_repeated for protobuf compatibility (#1010) (7d197db)
• server: deliver push notifications across all owners (#1016) (c24ae05)

1.0.1 (2026-04-22)

Bug Fixes

• compat: avoid unconditional grpc import in v0.3 context builders (#1006) (6b46ceb)

1.0.0 (2026-04-20)

See the v0.3 → v1.0 migration guide and changelog entries for alpha versions below.

⚠ BREAKING CHANGES

• remove Vertex AI Task Store integration (#999)

Bug Fixes

• rely on agent executor implementation for stream termination (#988) (d77cd68)

Documentation

• add comprehensive v0.3 to v1.0 migration guide (#987) (10dea8b)

Miscellaneous Chores

• release 1.0.0 (530ec37)
• remove Vertex AI Task Store integration (#999) (7fce2ad)

1.0.0-alpha.3 (2026-04-17)

Bug Fixes

• update with_a2a_extensions to append instead of overwriting (#985) (e1d0e7a)

... (truncated)

Commits

• eb37091 chore(main): release 1.0.2 (#1012)
• c24ae05 fix(server): deliver push notifications across all owners (#1016)
• a470bae test: test push notifications in itk (#1009)
• cfdbe4c feat(helpers): add non-text Part, Message, and Artifact helpers (#1004)
• d02ae4e chore(docs): document strict AgentExecutor streaming rules in v1.0 guide (#1014)
• 8a0f38d ci(linter): show which step failed (#1013)
• 7d197db fix(proto): use field.label instead of is_repeated for protobuf compatibility...
• b3d1ad6 chore(docs): update migration README.md (#1003)
• e3e089b chore(deps): bump cryptography from 46.0.5 to 46.0.7 (#993)
• 237621d chore(deps-dev): bump pytest from 9.0.2 to 9.0.3 (#966)
• 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 show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @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)

[njbrake]

Closing. The widened constraint resolves a2a-sdk 1.1.5, which moves a2a.types to protobuf generated classes: TaskState loses input_required, AgentSkill stops being a pydantic model, and a2a.server.apps is gone. That breaks serving/a2a and tools/a2a.py.

Measured against current main: collection aborts in 3 test modules and mypy reports 29 errors at 1.1.5, versus 314 passed and clean mypy at 0.3.26.

The <1.0.0 cap was added in #930 with "pin until code is updated for the new API", and that update has not happened. #958 adds a Dependabot ignore rule and records the rationale next to the cap.

Note: this comment was drafted by Claude Opus 5 via back-and-forth with @njbrake. The reasoning and decisions are his; the prose is Claude's.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.