Update dependency rspec-rails to v8

Author: renovate[bot]

Gemfile.lock

@@ -240,7 +240,7 @@ GEM
       thor (~> 1.0)
       zeitwerk (~> 2.5)
     rainbow (3.1.1)
-    rake (13.2.1)
+    rake (13.3.0)
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
@@ -258,7 +258,7 @@ GEM
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
       rspec-mocks (~> 3.13.0)
-    rspec-core (3.13.4)
+    rspec-core (3.13.5)
       rspec-support (~> 3.13.0)
     rspec-expectations (3.13.5)
       diff-lcs (>= 1.2.0, < 2.0)
@@ -345,7 +345,7 @@ GEM
     sync (0.5.0)
     sysexits (1.2.0)
     temple (0.10.3)
-    thor (1.3.2)
+    thor (1.4.0)
     tilt (2.6.0)
     timecop (0.9.10)
     timeout (0.4.3)