Update dependency @pulumi/pulumi to v3.257.0

[pulumi-renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@pulumi/pulumi (source)	3.256.0 → 3.257.0

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Release Notes

pulumi/pulumi (@​pulumi/pulumi)

v3.257.0

Compare Source

3.257.0 (2026-08-13)

Features

• [cli] Offer to create a first project after logging in to an account with no stacks #​24133
• [cli/do] Auto-assign identifiers to existing stack resources in pulumi do input expressions, and add pulumi do show-resources to list them #​24184
• [cli/do] Make "pulumi do <pkg> <resource> patch <name> work in stateful mode, overlaying the supplied inputs onto the existing snippet" #​24295
• [cli/state] Implement pulumi state get to show individual resources #​24191
• [cli/do] Fall back to an auto-created project and stack under PULUMI_HOME when pulumi do is invoked outside of a Pulumi project #​24231

Bug Fixes

• [sdkgen/go] Generated output-form invokes pass their arguments to the core SDK without resolving them first, so invoke dependencies can be inferred from arguments; generated SDKs now require pulumi SDK v3.255.0 or later #​24060
• [cli] Make 'pulumi stack history events --summary report the program errors from the language host #​24111
• [cli/cloud] pulumi api: repeated -H/--header values for the same header name now all reach the wire, instead of each one silently overwriting the last #​24180
• [cli/package] Maintain --server when adding to the packages section of Pulumi.yaml #​24189
• [sdk/go] Fix panics in hooks to not crash the entire process #​24218
• [programgen/go] for expressions are now generated as Go loops #​24228
• [programgen/go] Fix invalid _ := index statement emitted for resources with a numeric range whose value variable is unused #​24227
• [sdk/python] Report an error instead of hanging when a Python resource depends on its own parent #​24230
• [sdkgen/go] Generate the missing Go input types for resource input properties that are deeply nested collections of object types #​24236
• [programgen/go] Rename properties that collide with reserved names (e.g. elementType) the same way SDK codegen does, instead of emitting uncompilable code #​24235
• [cli/display] Show the value being added when a refresh or provider diff reports an added property #​24245
• [cli/plugin] Track when a plugin was last run so pulumi plugin ls reports an accurate last-used time on all platforms #​24251
• [engine] Show secrets in diff display when --show-secrets is passed #​24253
• [cli] Exit promptly when a command is cancelled while an HTTP request is being retried #​24276

Improvements

• [sdk/nodejs] Improve error message when resource registrations are still pending when pulumi exits #​24082
• [cli] Pass the invoked command (e.g. pulumi new) to the browser-based login/signup flow so Pulumi Cloud can attribute signups to the command that triggered them #​24192

Miscellaneous

• [sdkgen] Extension-parameterized packages now namespace their resource and function tokens under their own package name rather than the base provider's #​24143
• [java] Upgrade java to v1.35.0 #​24202
• [backend/diy] The deprecation warning is now an error. PULUMI_DIY_BACKEND_IGNORE_DEPRECATION_WARNING is now PULUMI_DIY_BACKEND_IGNORE_DEPRECATION_ERROR. #​24216
• [java] Upgrade java to v1.36.0 #​24243
• [sdk/dotnet] Upgrade dotnet to v3.111.1 #​24249

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This PR has been generated by Mend Renovate.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 56.56%. Comparing base (a35006f) to head (7ebb4a3).
⚠️ Report is 108 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1304      +/-   ##
==========================================
+ Coverage   55.95%   56.56%   +0.61%     
==========================================
  Files          34       35       +1     
  Lines        4130     4506     +376     
==========================================
+ Hits         2311     2549     +238     
- Misses       1594     1720     +126     
- Partials      225      237      +12     

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