chore(deps): update docker docker tag to v20.10.12

This MR contains the following updates:

Package	Type	Update	Change
docker	final	patch	20.10.11-dind-alpine3.14 -> 20.10.12-dind-alpine3.14

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Dockerfile

@@ -11,7 +11,7 @@ RUN \
   chmod a+x \
     /docker-buildx
 
-FROM docker:20.10.11-dind-alpine3.14
+FROM docker:20.10.12-dind-alpine3.14
 
 LABEL maintainer="Griefed <griefed@griefed.de>"
 LABEL description="Provides GitLab Semantic Release, buildx, JDK 8, NodeJS for Griefed's GitLab CI/CD pipelines."