Bump rspec -> 3.13.0 and rspec-its -> 2.0.0

Gemfile.lock

@@ -4,7 +4,7 @@ GEM
     bosh-template (2.4.0)
       semi_semantic (~> 1.2.0)
     coderay (1.1.3)
-    diff-lcs (1.5.0)
+    diff-lcs (1.5.1)
     ffi (1.16.3)
     formatador (1.1.0)
     guard (2.18.1)
@@ -39,22 +39,22 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    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)
+    rspec (3.13.0)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.2)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.3)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-its (1.3.0)
-      rspec-core (>= 3.0.0)
-      rspec-expectations (>= 3.0.0)
-    rspec-mocks (3.12.6)
+      rspec-support (~> 3.13.0)
+    rspec-its (2.0.0)
+      rspec-core (>= 3.13.0)
+      rspec-expectations (>= 3.13.0)
+    rspec-mocks (3.13.2)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.12.0)
-    rspec-support (3.12.1)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.2)
     semi_semantic (1.2.0)
     shellany (0.0.1)
     terminal-notifier-guard (1.7.0)
@@ -74,4 +74,4 @@ DEPENDENCIES
   terminal-notifier-guard
 
 BUNDLED WITH
-   2.4.19
+   2.5.23