build: bump version to v0.21.0-beta.rc3

[ziggie1984]

Summary

Bumps the v0.21 release branch version from v0.21.0-beta.rc2 to v0.21.0-beta.rc3.

Test plan

• go test ./build

[gemini-code-assist]

Summary of Changes

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This pull request performs a routine version bump for the v0.21 release branch to reflect the latest beta release candidate.

Highlights

• Version Increment: Updated the application pre-release version from v0.21.0-beta.rc2 to v0.21.0-beta.rc3.

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[github-actions]

PR Severity: MEDIUM

Classified from changed files | 1 file | 2 lines changed

Medium (1 file)

• build/version.go - Version bump file in build/ package; not categorized under CRITICAL or HIGH packages — falls under "other Go files not categorized above"

Analysis

This PR makes a minimal change to build/version.go (1 addition, 1 deletion), which is a version bump or similar housekeeping update. The build/ package does not fall under any CRITICAL or HIGH severity categories, so this is classified as MEDIUM per the "other Go files not categorized above" rule.

No severity bump applies: only 1 non-test, non-generated file changed (threshold: >20), and only 2 lines changed (threshold: >500).

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[gemini-code-assist]

Code Review

This pull request updates the pre-release version string in build/version.go from "beta.rc2" to "beta.rc3". There are no review comments to address, and the changes look correct.

[ziggie1984]

Let's wait for #10838 to be merged

[saubyk]

Aren't we mixing concerns here? Warrants an explanation at least

[ziggie1984]

Blocker is #10851, thats def a must