Update l.gcr.io/google/bazel Docker tag to v3.4.1

This MR contains the following updates:

Package	Type	Update	Change
l.gcr.io/google/bazel	image-name	minor	3.3.1 -> 3.4.1

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Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever MR becomes conflicted.

🔕 Ignore: Close this MR and you won't be reminded about this update again.

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