chore(deps): update dependency docfx to 2.78.2 (#825)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [docfx](https://redirect.github.com/dotnet/docfx) | `2.78.1` ->
`2.78.2` |
[![age](https://developer.mend.io/api/mc/badges/age/nuget/docfx/2.78.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/nuget/docfx/2.78.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/nuget/docfx/2.78.1/2.78.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/docfx/2.78.1/2.78.2?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>dotnet/docfx (docfx)</summary>

###
[`v2.78.2`](https://redirect.github.com/dotnet/docfx/releases/tag/2.78.2)

[Compare
Source](https://redirect.github.com/dotnet/docfx/compare/2.78.1...2.78.2)

<!-- Release notes generated using configuration in .github/release.yml
at main -->

#### What's Changed

##### 🎉 New Features

- feat: Reformat YouTube videos to the embeded URL by
[@&#8203;hultqvist](https://redirect.github.com/hultqvist) in
[https://github.com/dotnet/docfx/pull/10372](https://redirect.github.com/dotnet/docfx/pull/10372)

##### 🐞 Bug Fixes

- fix: Fix Node.js prerequisite issues by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10406](https://redirect.github.com/dotnet/docfx/pull/10406)
- fix: System.Reflection.Metadata.Document.Name can throw BadImageForma…
by [@&#8203;RobJessop](https://redirect.github.com/RobJessop) in
[https://github.com/dotnet/docfx/pull/10410](https://redirect.github.com/dotnet/docfx/pull/10410)
- fix: Bootstrap variable override problem by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10412](https://redirect.github.com/dotnet/docfx/pull/10412)
- fix: Skip header/footer rendering for cover page by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10416](https://redirect.github.com/dotnet/docfx/pull/10416)

##### 📄 Documentation

- docs: Add how to use docfx nightly version by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10394](https://redirect.github.com/dotnet/docfx/pull/10394)

##### 💪 Other Changes

- chore: Add published package tests to nightly build workflow by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10403](https://redirect.github.com/dotnet/docfx/pull/10403)
- chore: Update `Dockerfile` by
[@&#8203;filzrev](https://redirect.github.com/filzrev) in
[https://github.com/dotnet/docfx/pull/10407](https://redirect.github.com/dotnet/docfx/pull/10407)

#### New Contributors

- [@&#8203;hultqvist](https://redirect.github.com/hultqvist) made their
first contribution in
[https://github.com/dotnet/docfx/pull/10372](https://redirect.github.com/dotnet/docfx/pull/10372)

**Full Changelog**:
dotnet/docfx@2.78.1...2.78.2

</details>

---

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.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "docfx": {
-      "version": "2.78.1",
+      "version": "2.78.2",
       "commands": ["docfx"]
     }
   }