Bump fable from 5.0.0-alpha.5 to 5.0.0-alpha.7 in the dotnet-tools group

Bumps the dotnet-tools group with 1 update: [fable](https://github.com/fable-compiler/Fable).


Updates `fable` from 5.0.0-alpha.5 to 5.0.0-alpha.7
- [Release notes](https://github.com/fable-compiler/Fable/releases)
- [Commits](fable-compiler/Fable@5.0.0-alpha.5...5.0.0-alpha.7)

---
updated-dependencies:
- dependency-name: fable
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet-tools
...

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

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "fable": {
-      "version": "5.0.0-alpha.5",
+      "version": "5.0.0-alpha.7",
       "commands": [
         "fable"
       ],