fix(deps): update ghcr.io/renovatebot/renovate docker tag to v37.303.4

This MR contains the following updates:

Package	Update	Change
ghcr.io/renovatebot/renovate (source)	patch	37.303.2 -> 37.303.4
ghcr.io/renovatebot/renovate (source)	patch	37.303.2-slim -> 37.303.4-slim

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Release Notes

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

v37.303.4

Compare Source

Bug Fixes

• validation: support customDatasources.description strings (#​28448) (a9e0c64)

v37.303.3

Compare Source

Bug Fixes

• npm: don't delete lockfiles early (#​28472) (b357e4d)

Miscellaneous Chores

• deps: update peter-evans/create-pull-request action to v6.0.4 (#​28479) (d9d744d)

Code Refactoring

• host-rules: Refactor matching logic (#​28482) (e7d9c05)
• Rename validateUrl to isHttpUrl (#​28484) (d6d1e57)

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