Update renovate/renovate Docker tag to v31.81.3

This MR contains the following updates:

Package	Type	Update	Change
renovate/renovate	Kustomization	patch	31.81.2 -> 31.81.3

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Release Notes

renovatebot/renovate

v31.81.3

31.81.3 (2022-02-13)

Miscellaneous Chores

• deps: update node.js to 7ea118c (#​14199) (f72517d)

Code Refactoring

• datasource/docker: Convert to class (#​14194) (00a2dce)
• datasource/nuget: Convert to class (#​14140) (b0ce30b)
• migrations: host rules (#​13874) (da3772a)

Build System

• deps: update dependency minimatch to v3.0.5 (#​14202) (86c9744)

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