chore(ci,docker): Renovate config updated + config linter added; CI updated

[tarampampam]

$ docker run --rm -ti -v "$(pwd):/src" -w /src node:alpine sh

/src # npx --yes --package renovate -- renovate-config-validator --strict ./.github/renovate.json
 INFO: Validating ./.github/renovate.json
 WARN: Config migration necessary
       "oldConfig": {
         "$schema": "https://docs.renovatebot.com/renovate-schema.json",
         "extends": [
           "config:base",
           ":disableDependencyDashboard",
           ":semanticCommitType(chore)"
         ],
         "assignees": ["jetexe"],
         "labels": ["dependencies"]
       },
       "newConfig": {
         "$schema": "https://docs.renovatebot.com/renovate-schema.json",
         "extends": [
           "config:recommended",
           ":disableDependencyDashboard",
           ":semanticCommitType(chore)"
         ],
         "assignees": ["jetexe"],
         "labels": ["dependencies"]
       }