ruby: bump rspec from 3.12.0 to 3.13.0

Bumps [rspec](https://github.com/rspec/rspec-metagem) from 3.12.0 to 3.13.0.
- [Commits](rspec/rspec-metagem@v3.12.0...v3.13.0)

---
updated-dependencies:
- dependency-name: rspec
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -8,7 +8,7 @@ GEM
       tzinfo (~> 2.0)
     ast (2.4.2)
     concurrent-ruby (1.2.2)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
     json (2.6.2)
@@ -22,19 +22,19 @@ GEM
     rake (13.0.6)
     regexp_parser (2.6.1)
     rexml (3.2.5)
-    rspec (3.12.0)
-      rspec-core (~> 3.12.0)
-      rspec-expectations (~> 3.12.0)
-      rspec-mocks (~> 3.12.0)
-    rspec-core (3.12.0)
-      rspec-support (~> 3.12.0)
-    rspec-expectations (3.12.0)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.0)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-mocks (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.0)
     rubocop (1.37.1)
       json (~> 2.3)
       parallel (~> 1.10)