[Actions] Add a shared concurrency block in all gh-pages jobs

[VeithMetro]

No description provided.

[Copilot]

Pull request overview

Adds a shared GitHub Actions concurrency group to all publish_pages jobs so that gh-pages deployments across these generator workflows are serialized, reducing the risk of concurrent writes clobbering the gh-pages branch.

Changes:

• Added job-level concurrency to each publish_pages job.
• Standardized the concurrency group name to gh-pages-deploy with cancel-in-progress: false to queue deployments rather than cancel them.

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated no comments.

File	Description
.github/workflows/ProxyStubGenerator.yml	Serializes publish_pages deployments via shared gh-pages-deploy concurrency group.
.github/workflows/PluginSkeletonGenerator.yml	Serializes publish_pages deployments via shared gh-pages-deploy concurrency group.
.github/workflows/LuaGenerator.yml	Serializes publish_pages deployments via shared gh-pages-deploy concurrency group.
.github/workflows/JsonGenerator.yml	Serializes publish_pages deployments via shared gh-pages-deploy concurrency group.

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[github-actions]

LuaGenerator Results

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No changes detected.

[github-actions]

Plugin skeleton preview (latest run):
https://rdkcentral.github.io/ThunderTools/PluginSkeletonGenerator/previews/pr-255/run-26210301968/

No changes detected in generated plugin code. The PR changes are internal to the generator or do not affect output.

[github-actions]

JsonGenerator Results

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No changes detected.

[github-actions]

ProxyStubGenerator Results

View Results

No changes detected.