Bump rubocop-performance from 1.25.0 to 1.26.0 (#50)

Bumps [rubocop-performance](https://github.com/rubocop/rubocop-performance) from 1.25.0 to 1.26.0.
- [Release notes](https://github.com/rubocop/rubocop-performance/releases)
- [Changelog](https://github.com/rubocop/rubocop-performance/blob/master/CHANGELOG.md)
- [Commits](rubocop/rubocop-performance@v1.25.0...v1.26.0)

---
updated-dependencies:
- dependency-name: rubocop-performance
  dependency-version: 1.26.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -34,10 +34,10 @@ GEM
       lint_roller (~> 1.1)
       rubocop (>= 1.75.0, < 2.0)
       rubocop-ast (>= 1.38.0, < 2.0)
-    rubocop-performance (1.25.0)
+    rubocop-performance (1.26.0)
       lint_roller (~> 1.1)
       rubocop (>= 1.75.0, < 2.0)
-      rubocop-ast (>= 1.38.0, < 2.0)
+      rubocop-ast (>= 1.44.0, < 2.0)
     rubocop-rake (0.7.1)
       lint_roller (~> 1.1)
       rubocop (>= 1.72.1)