Update beam-master container

[shunping]

Update the container tag to beam-master-20260624.

[gemini-code-assist]

Summary of Changes

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This pull request updates the SDK container tag used by the Dataflow runner. This change ensures that the runner utilizes the most recent development container version, maintaining consistency with the latest master branch updates.

Highlights

• Container Tag Update: Updated the BEAM_DEV_SDK_CONTAINER_TAG to 'beam-master-20260624' to align with the latest development container image.

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[shunping]

r: @jrmccluskey

[gemini-code-assist]

Code Review

This pull request updates the BEAM_DEV_SDK_CONTAINER_TAG constant in names.py to 'beam-master-20260624'. There are no review comments, and I have no feedback to provide.

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[github-actions]

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[shunping]

Pandas 2.3.3 is included in beam-master-20260624, we need this to fix #30513 and #38807.

Also cc'ed @Amar3tto