Bump view_component from 3.19.0 to 3.20.0 in /demo (#3209)

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

demo/Gemfile.lock

@@ -220,7 +220,7 @@ GEM
     mime-types (3.5.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2024.0507)
-    minitest (5.25.1)
+    minitest (5.25.2)
     ms_rest (0.7.6)
       concurrent-ruby (~> 1.0)
       faraday (>= 0.9, < 2.0.0)
@@ -233,7 +233,7 @@ GEM
     msgpack (1.7.2)
     multi_json (1.15.0)
     multipart-post (2.4.1)
-    mutex_m (0.2.0)
+    mutex_m (0.3.0)
     netrc (0.11.0)
     nio4r (2.7.3)
     nokogiri (1.16.7-arm64-darwin)
@@ -328,7 +328,7 @@ GEM
       railties (>= 6.0.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
-    view_component (3.19.0)
+    view_component (3.20.0)
       activesupport (>= 5.2.0, < 8.1)
       concurrent-ruby (~> 1.0)
       method_source (~> 1.0)