Release 8.3.1 (2025-06-30)

Bazel 8.3.1 is a patch LTS release. It is fully backward compatible with Bazel 8.0 and contains selected changes by the Bazel community and Google engineers.

• Removed the "overwrote runfiles" warning related to rules_shell. (#26374)
• Reverted the change to move the Bash runfiles library out of Bazel. This will be delayed until 9.0. (#26372)
• Fixed hang with force fetching + repo contents cache (#26412)

Refer to the full list of commits for more details.

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