Bump bootstrap-vue-next from 0.25.15 to 0.26.7 in /freedata_gui

Bumps [bootstrap-vue-next](https://github.com/bootstrap-vue-next/bootstrap-vue-next/tree/HEAD/packages/bootstrap-vue-next) from 0.25.15 to 0.26.7.
- [Release notes](https://github.com/bootstrap-vue-next/bootstrap-vue-next/releases)
- [Changelog](https://github.com/bootstrap-vue-next/bootstrap-vue-next/blob/main/packages/bootstrap-vue-next/CHANGELOG.md)
- [Commits](https://github.com/bootstrap-vue-next/bootstrap-vue-next/commits/nuxt-v0.26.7/packages/bootstrap-vue-next)

---
updated-dependencies:
- dependency-name: bootstrap-vue-next
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

freedata_gui/package.json

@@ -28,7 +28,7 @@
     "@popperjs/core": "^2.11.8",
     "bootstrap": "^5.3.3",
     "bootstrap-icons": "^1.11.3",
-    "bootstrap-vue-next": "^0.25.12",
+    "bootstrap-vue-next": "^0.26.7",
     "chart.js": "^4.4.3",
     "chartjs-plugin-annotation": "^3.0.1",
     "core-js": "^3.8.3",