Bump consolidation/self-update from 2.1.0 to 3.1.0 (#266)

* Bump consolidation/self-update from 2.1.0 to 3.1.0

Bumps [consolidation/self-update](https://github.com/consolidation/self-update) from 2.1.0 to 3.1.0.
- [Release notes](https://github.com/consolidation/self-update/releases)
- [Commits](consolidation/self-update@2.1.0...3.1.0)

---
updated-dependencies:
- dependency-name: consolidation/self-update
  dependency-version: 3.1.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Fix SelfUpdateCommand instantiation for consolidation/self-update 3.x

The 3.x release changed the constructor signature: SelfUpdateCommand now
accepts a SelfUpdateManager object instead of (name, version, repo) strings.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Matt Glaman <nmd.matt@gmail.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 3 people

composer.json

@@ -7,7 +7,7 @@
         "ext-json": "*",
         "composer-runtime-api": "^2.0.0",
         "caseyamcl/guzzle_retry_middleware": "^2.13",
-        "consolidation/self-update": "^2.0",
+        "consolidation/self-update": "^3.1",
         "czproject/git-php": "^4.1",
         "dg/rss-php": "^1.2",
         "guzzlehttp/guzzle": "^6.1 || ^7.3",