Bump rspec-puppet from 2.6.2 to 2.6.15

Bumps [rspec-puppet](https://github.com/puppetlabs/rspec-puppet) from 2.6.2 to 2.6.15.
- [Release notes](https://github.com/puppetlabs/rspec-puppet/releases)
- [Changelog](https://github.com/puppetlabs/rspec-puppet/blob/main/CHANGELOG.md)
- [Commits](puppetlabs/rspec-puppet@v2.6.2...v2.6.15)

---
updated-dependencies:
- dependency-name: rspec-puppet
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -23,7 +23,7 @@ GEM
     base64 (0.2.0)
     coderay (1.1.3)
     concurrent-ruby (1.2.2)
-    diff-lcs (1.3)
+    diff-lcs (1.5.0)
     diffy (3.4.2)
     docile (1.1.5)
     facter (2.5.7)
@@ -86,21 +86,21 @@ GEM
     rake (12.3.3)
     regexp_parser (2.8.3)
     rexml (3.2.6)
-    rspec (3.6.0)
-      rspec-core (~> 3.6.0)
-      rspec-expectations (~> 3.6.0)
-      rspec-mocks (~> 3.6.0)
-    rspec-core (3.6.0)
-      rspec-support (~> 3.6.0)
-    rspec-expectations (3.6.0)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
-    rspec-mocks (3.6.0)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.6)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.6.0)
-    rspec-puppet (2.6.2)
+      rspec-support (~> 3.12.0)
+    rspec-puppet (2.6.15)
       rspec
-    rspec-support (3.6.0)
+    rspec-support (3.12.1)
     rubocop (1.50.2)
       json (~> 2.3)
       parallel (~> 1.10)