chore(deps): update ubuntu docker digest to 66460d5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ubuntu	oci_pull	digest	0bced47 -> 66460d5

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[aspect-workflows]

Test (Bazel 7.x) (Test)

All tests were cache hits

5 tests (100.0%) were fully cached saving 1m 24s.

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Test (Bazel 8.x) (Test)

All tests were cache hits

5 tests (100.0%) were fully cached saving 1m 14s.

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Test (Bazel 6.x) (Test)

e2e/smoke

All tests were cache hits

1 test (100.0%) was fully cached saving 37ms.

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Test (Bazel 7.x) (Test)

e2e/smoke

All tests were cache hits

1 test (100.0%) was fully cached saving 32ms.

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Test (Bazel 8.x) (Test)

e2e/smoke

All tests were cache hits

1 test (100.0%) was fully cached saving 63ms.