chore(deps): update structurizr packages to v6 (major)

[ggrossetie]

This PR contains the following updates:

Package	Type	Update	Change
com.structurizr:structurizr-core (source)	compile	major	5.0.3 → 6.1.0
com.structurizr:structurizr-export (source)	compile	major	5.0.3 → 6.1.0
com.structurizr:structurizr-dsl (source)	compile	major	5.0.3 → 6.1.0

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Release Notes

structurizr/structurizr (com.structurizr:structurizr-core)

v6.1.0: (library)

Compare Source

structurizr-core

• Normalises line endings when importing Markdown/AsciiDoc documentation and decisions (#​22).
• Adds validation that structurizr.groupSeparator is a single character (#​35).
• Adds support for dynamic perspectives.
• Deprecates health checks in favour of dynamic perspectives.
• Fixes #​36 (Workspace.trim() removes infrastructureNode when only element in deploymentNode).
• Fixes #​37 (Workspace.trim() removes the origin of linked relationships).

structurizr-client

• Removes deprecated Apache HttpClient usage (fixes #​31).
• Adds WorkspaceApiClient.putImage() methods to upload an image to a workspace.

structurizr-dsl

• Perspectives can be specified as a perspective { ... } block.

v6.0.0: (library)

General

• Requires Java 21.

structurizr-core

• Removes branding object.
• Removes Graphviz as an automatic layout implementation option.
• Fixes #​5 (Deployment view animations don't include parent deployment nodes of software system instances).
• Adds a way to override relationship technologies in deployment environments.
• Filtered views can no longer be created on top of views with automatic layout enabled.

structurizr-dsl

• Removes branding keyword.
• Adds a way to override relationship technologies in deployment environments.
• Adds support for "installed" themes (e.g. theme amazon-web-services-2025.07).

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[xavier-calland]

It seems that the Java version used in the GitHub action is still 17; it should be using version 21 now, shouldn't it?

[ggrossetie]

It seems that the Java version used in the GitHub action is still 17; it should be using version 21 now, shouldn't it?

That's correct, we should now use Java 21 as a baseline 👍🏻

[xavier-calland]

Ah yes, there are many changes in the Structuralizr rendering of v6.
@ggrossetie I can try to update the tests if you want.

[ggrossetie]

Ah yes, there are many changes in the Structuralizr rendering of v6.

@xavier-calland Sure, go for it!
I would really like to have a snapshot testing system similar to Jest, but I haven’t found any good libraries or tools in Java to do it yet.