Bump dotnet-ef from 7.0.13 to 8.0.3 (#997)

Bumps [dotnet-ef](https://github.com/dotnet/efcore) from 7.0.13 to 8.0.3.
- [Release notes](https://github.com/dotnet/efcore/releases)
- [Commits](https://github.com/dotnet/efcore/compare/v7.0.13...v8.0.3)

---
updated-dependencies:
- dependency-name: dotnet-ef
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "dotnet-ef": {
-      "version": "7.0.13",
+      "version": "8.0.3",
       "commands": [
         "dotnet-ef"
       ]