Revert "install mkdoc plugin using pip"

mkdocs:

  image:

    name: squidfunk/mkdocs-material:6.1.7

    name: squidfunk/mkdocs-material:6.1.5

    entrypoint: [""]

  stage: build

  variables:

  script:

    - pip3 install mkdocs-git-revision-date-localized-plugin==0.7.2

    - pip3 install mkdocs-macros-plugin==0.5.0

    - pip3 install mkdocs-awesome-pages-plugin==2.4.0

    - mkdocs build -d "$MKDOCS_OUTPUT_PATH"

  artifacts:

    when: always