Bump @storybook/addon-a11y in /extensions/ql-vscode (#3364)

Bumps [@storybook/addon-a11y](https://github.com/storybookjs/storybook/tree/HEAD/code/addons/a11y) from 7.6.13 to 7.6.15.
- [Release notes](https://github.com/storybookjs/storybook/releases)
- [Changelog](https://github.com/storybookjs/storybook/blob/next/CHANGELOG.md)
- [Commits](https://github.com/storybookjs/storybook/commits/v7.6.15/code/addons/a11y)

---
updated-dependencies:
- dependency-name: "@storybook/addon-a11y"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

extensions/ql-vscode/package-lock.json

@@ -54,7 +54,7 @@
         "@github/markdownlint-github": "^0.6.0",
         "@octokit/plugin-throttling": "^8.0.0",
         "@playwright/test": "^1.40.1",
-        "@storybook/addon-a11y": "^7.6.13",
+        "@storybook/addon-a11y": "^7.6.15",
         "@storybook/addon-actions": "^7.1.0",
         "@storybook/addon-essentials": "^7.1.0",
         "@storybook/addon-interactions": "^7.1.0",
@@ -5208,12 +5208,12 @@
       }
     },
     "node_modules/@storybook/addon-a11y": {
-      "version": "7.6.13",
-      "resolved": "https://registry.npmjs.org/@storybook/addon-a11y/-/addon-a11y-7.6.13.tgz",
-      "integrity": "sha512-6Qf+tzt1MXXHDUpSVz3P+e7j5HkilXG1VI0UDWPsN9ztjVkK72PIE9LcHSt/ojcrHAzhNlpZaWf7CblciRs2ag==",
+      "version": "7.6.15",
+      "resolved": "https://registry.npmjs.org/@storybook/addon-a11y/-/addon-a11y-7.6.15.tgz",
+      "integrity": "sha512-8PxRMBJUSxNoceo2IYXFyZp3VU+/ONK/DsD0dj/fVrv7izFrS8aw2GWSsSMK8xAbEUpANXWMKGaSyvrRFVgsVQ==",
       "dev": true,
       "dependencies": {
-        "@storybook/addon-highlight": "7.6.13",
+        "@storybook/addon-highlight": "7.6.15",
         "axe-core": "^4.2.0"
       },
       "funding": {
@@ -5222,9 +5222,9 @@
       }
     },
     "node_modules/@storybook/addon-a11y/node_modules/@storybook/addon-highlight": {
-      "version": "7.6.13",
-      "resolved": "https://registry.npmjs.org/@storybook/addon-highlight/-/addon-highlight-7.6.13.tgz",
-      "integrity": "sha512-hoU0MgrTwYSLusCYpVZLwrT3cpkOOyypkve1BZEXCjWzYYMlAhAmED4VilC6nT/jnRtqLaW1gsCy1Gj5IS+I7w==",
+      "version": "7.6.15",
+      "resolved": "https://registry.npmjs.org/@storybook/addon-highlight/-/addon-highlight-7.6.15.tgz",
+      "integrity": "sha512-ptidWZJJcEM83YsxCjf+m1q8Rr9sN8piJ4PJlM2vyc4MLZY4q6htb1JJFeq3ov1Iz6SY9KjKc/zOkWo4L54nxw==",
       "dev": true,
       "dependencies": {
         "@storybook/global": "^5.0.0"

extensions/ql-vscode/package.json

@@ -1972,7 +1972,7 @@
     "@github/markdownlint-github": "^0.6.0",
     "@octokit/plugin-throttling": "^8.0.0",
     "@playwright/test": "^1.40.1",
-    "@storybook/addon-a11y": "^7.6.13",
+    "@storybook/addon-a11y": "^7.6.15",
     "@storybook/addon-actions": "^7.1.0",
     "@storybook/addon-essentials": "^7.1.0",
     "@storybook/addon-interactions": "^7.1.0",