Update kroese/set-secret action to v4

        echo "NEW_MINOR=$((${{ secrets.MINOR }}+1))" >> $GITHUB_ENV

    -

      name: Update minor version

      uses: kroese/set-secret@v3

      uses: kroese/set-secret@v4

      with:

        name: 'MINOR'

        value: ${{ env.NEW_MINOR }}