Update dependency capistrano-rails to v1.6.3 (#25934)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Gemfile.lock

@@ -146,7 +146,7 @@ GEM
       sshkit (>= 1.9.0)
     capistrano-bundler (2.1.0)
       capistrano (~> 3.1)
-    capistrano-rails (1.6.2)
+    capistrano-rails (1.6.3)
       capistrano (~> 3.1)
       capistrano-bundler (>= 1.1, < 3)
     capistrano-rbenv (2.2.0)
@@ -668,7 +668,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
-    sshkit (1.21.4)
+    sshkit (1.21.5)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
     stackprof (0.2.25)