Bump debug from 1.7.1 to 1.9.1

Bumps [debug](https://github.com/ruby/debug) from 1.7.1 to 1.9.1.
- [Release notes](https://github.com/ruby/debug/releases)
- [Commits](ruby/debug@v1.7.1...v1.9.1)

---
updated-dependencies:
- dependency-name: debug
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -107,9 +107,9 @@ GEM
       rexml
     crass (1.0.6)
     date (3.3.3)
-    debug (1.7.1)
-      irb (>= 1.5.0)
-      reline (>= 0.3.1)
+    debug (1.9.1)
+      irb (~> 1.10)
+      reline (>= 0.3.8)
     deprecate (0.0.0)
     diff-lcs (1.5.0)
     erubi (1.12.0)
@@ -156,10 +156,11 @@ GEM
       multi_xml (>= 0.5.2)
     i18n (1.12.0)
       concurrent-ruby (~> 1.0)
-    io-console (0.6.0)
+    io-console (0.7.1)
     io-event (1.1.6)
-    irb (1.6.2)
-      reline (>= 0.3.0)
+    irb (1.11.0)
+      rdoc
+      reline (>= 0.3.8)
     json (2.6.3)
     jwt (1.5.6)
     loofah (2.19.1)
@@ -210,6 +211,8 @@ GEM
     protocol-http2 (0.15.1)
       protocol-hpack (~> 1.4)
       protocol-http (~> 0.18)
+    psych (5.1.2)
+      stringio
     public_suffix (5.0.1)
     puma (6.1.1)
       nio4r (~> 2.0)
@@ -248,10 +251,12 @@ GEM
       zeitwerk (~> 2.5)
     rainbow (3.1.1)
     rake (13.0.6)
+    rdoc (6.6.2)
+      psych (>= 4.0.0)
     redis-client (0.12.2)
       connection_pool
     regexp_parser (2.7.0)
-    reline (0.3.2)
+    reline (0.4.2)
       io-console (~> 0.5)
     rexml (3.2.5)
     rspec-core (3.12.1)
@@ -308,6 +313,7 @@ GEM
     spring (4.1.1)
     spring-commands-rspec (1.0.4)
       spring (>= 0.9.1)
+    stringio (3.1.0)
     strong_migrations (1.4.4)
       activerecord (>= 5.2)
     test-prof (1.2.0)