Attempt to fix Storybook v6 build

The difference between v7 and v6 is starting to be quite large at this
point.

.github/workflows/test.yml

@@ -31,6 +31,8 @@ jobs:
       HAPPO_API_KEY: ${{ secrets.HAPPO_API_KEY }}
       HAPPO_API_SECRET: ${{ secrets.HAPPO_API_SECRET }}
       DISABLE_REACT_WEBPACK5_FRAMEWORK: true
+      DISABLE_ADDONS: true
+      HAPPO_DEBUG: true
 
     steps:
       - uses: actions/checkout@v2
@@ -41,6 +43,7 @@ jobs:
       - run: corepack enable
       - run: yarn install --frozen-lockfile
       - run: rm .storybook/Interactive.stories.js
-      - run: yarn remove @storybook/react-webpack5 storybook
-      - run: yarn add @storybook/[email protected] @storybook/[email protected] @storybook/[email protected] @storybook/[email protected] @storybook/[email protected] @storybook/[email protected] @storybook/[email protected] react@17 react-dom@17 --dev
-      - run: yarn build && yarn happo run
+      - run: yarn add --dev storybook@6 @storybook/addon-actions@6 @storybook/addon-interactions@6 @storybook/api@6 @storybook/react@6
+      - run: yarn build
+      - run: yarn storybook build --version
+      - run: yarn happo run