fix(deps): update ghcr.io/renovatebot/renovate docker tag to v38.21.4

This MR contains the following updates:

Package	Update	Change
ghcr.io/renovatebot/renovate (source)	patch	38.21.3 -> 38.21.4

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Release Notes

renovatebot/renovate (ghcr.io/renovatebot/renovate)

v38.21.4

Compare Source

Bug Fixes

• deps: update ghcr.io/renovatebot/base-image docker tag to v7.9.3 (#​30652) (adfd1dd)

Miscellaneous Chores

• deps: update dependency memfs to v4.11.1 (#​30650) (1f330fd)
• git: use PLATFORM_HOST_TYPES as supported git hosts for gitAllowedHostTypes (#​30643) (9008c2e)
• renovate: update ignored paths (#​30653) (ab0a49c)

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