build(dependabot): group dependency updates by type and configure com…

…mit prefixes (actions#27)

- Group production and development dependency updates
- Configure dependency update commit prefixes to release on production
dependency updates

  Dependabot commit messages before:

  - `build(deps): bump semver from 7.5.1 to 7.5.4`
  - `build(deps-dev): bump dotenv from 16.0.3 to 16.3.1`

  Dependabot commit messages after:

  - `fix(deps): bump semver from 7.5.1 to 7.5.4`
- `build(deps-dev): bump dotenv from 16.0.3 to 16.3.1` (no change to dev
dependencies)

.github/dependabot.yml

@@ -4,6 +4,15 @@ updates:
     directory: "/"
     schedule:
       interval: "monthly"
+    groups:
+      production-dependencies:
+        dependency-type: "production"
+      development-dependencies:
+        dependency-type: "development"
+    commit-message:
+      prefix: "fix"
+      prefix-development: "build"
+      include: "scope"
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule: