Bump rb-kqueue from 0.2.5 to 0.2.6

Bumps [rb-kqueue](https://github.com/mat813/rb-kqueue) from 0.2.5 to 0.2.6.
- [Release notes](https://github.com/mat813/rb-kqueue/releases)
- [Commits](https://github.com/mat813/rb-kqueue/commits)

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

Gemfile.lock

@@ -156,7 +156,7 @@ GEM
       multipart-post (>= 1.2, < 3)
       ruby2_keywords
     faraday-net_http (1.0.1)
-    ffi (1.13.1)
+    ffi (1.15.0)
     github-markdown (0.6.9)
     gitlab_omniauth-ldap (2.1.1)
       net-ldap (~> 0.16)
@@ -351,7 +351,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rb-kqueue (0.2.5)
+    rb-kqueue (0.2.6)
       ffi (>= 0.5.0)
     redcarpet (3.5.1)
     regexp_parser (1.7.1)