Upgrading to 6.2.7 triggers several outdated dependency warnings for @storybook/addon-a11y

[stephiescastle]

Describe the bug

I was on v6.2.5 and used npx sb@latest upgrade to upgrade to v6.2.7.

Everything worked fine except now I see a long list of warnings about outdated dependencies for @storybook/addon-a11y:

WARN Found 24 outdated packages (relative to '@storybook/addon-a11y@6.2.7')
WARN Please make sure your packages are updated to ensure a consistent experience.
WARN - @storybook/api@6.2.3
WARN - @storybook/channels@6.2.3
WARN - @storybook/client-logger@6.2.3
WARN - @storybook/core-events@6.2.3
WARN - @storybook/router@6.2.3
WARN - @storybook/client-logger@6.2.3
WARN - @storybook/theming@6.2.3
WARN - @storybook/components@6.2.3
WARN - @storybook/client-logger@6.2.3
WARN - @storybook/theming@6.2.3
WARN - @storybook/core-events@6.2.3
WARN - @storybook/theming@6.2.3
WARN - @storybook/client-logger@6.2.3
WARN - @storybook/api@6.2.1
WARN - @storybook/channels@6.2.1
WARN - @storybook/client-logger@6.2.1
WARN - @storybook/core-events@6.2.1
WARN - @storybook/router@6.2.1
WARN - @storybook/client-logger@6.2.1
WARN - @storybook/theming@6.2.1
WARN - @storybook/client-logger@6.2.1
WARN - @storybook/components@6.2.1
WARN - @storybook/client-logger@6.2.1
WARN - @storybook/theming@6.2.1

To Reproduce
Steps to reproduce the behavior:

1. run npx sb@latest upgrade on a storybook that uses @storybook/addon-a11y. Even if you've already upgraded to 6.2.7, the same warnings will be triggered each time.

Expected behavior
Shouldn't get any dependency warnings about @storybook/addon-a11y

System
Please paste the results of npx sb@next info here.

Environment Info:

  System:
    OS: macOS 10.15.7
    CPU: (16) x64 Intel(R) Core(TM) i9-9980HK CPU @ 2.40GHz
  Binaries:
    Node: 14.4.0 - ~/.nvm/versions/node/v14.4.0/bin/node
    Yarn: 1.22.10 - ~/repos/www-frontend/node_modules/.bin/yarn
    npm: 6.14.5 - ~/.nvm/versions/node/v14.4.0/bin/npm
  Browsers:
    Chrome: 89.0.4389.114
    Edge: 89.0.774.75
    Firefox: 78.9.0
    Safari: 14.0.3
  npmPackages:
    @storybook/addon-a11y: ^6.2.7 => 6.2.7 
    @storybook/addon-actions: ^6.2.7 => 6.2.7 
    @storybook/addon-backgrounds: ^6.2.7 => 6.2.7 
    @storybook/addon-controls: ^6.2.7 => 6.2.7 
    @storybook/addon-docs: ^6.2.7 => 6.2.7 
    @storybook/addon-links: ^6.2.7 => 6.2.7 
    @storybook/addon-storyshots: ^6.2.7 => 6.2.7 
    @storybook/addon-storysource: ^6.2.7 => 6.2.7 
    @storybook/addon-viewport: ^6.2.7 => 6.2.7 
    @storybook/addons: ^6.2.7 => 6.2.7 
    @storybook/vue: ^6.2.7 => 6.2.7 

[shilman]

I suspect there are multiple versions installed and the warning is actually correct. What gets shown when you run:

yarn why @storybook/api

[stephiescastle]

Ah, yes that explains it. I'm using a couple of packages that list older versions as dependencies. I don't use yarn, but doing npm ls @storybook/api gives me:

my-repo@1.0.0
├─┬ @storybook/addon-a11y@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addon-actions@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addon-backgrounds@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addon-controls@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addon-docs@6.2.7
│ ├── @storybook/api@6.2.7 
│ └─┬ @storybook/builder-webpack4@6.2.7
│   ├── @storybook/api@6.2.7 
│   └─┬ @storybook/ui@6.2.7
│     └── @storybook/api@6.2.7 
├─┬ @storybook/addon-storysource@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addon-viewport@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @storybook/addons@6.2.7
│ └── @storybook/api@6.2.7 
├─┬ @whitespace/storybook-addon-html@5.0.0
│ └── @storybook/api@6.2.1 
└─┬ storybook-addon-themes@6.1.0
  └── @storybook/api@6.2.3