Merge pull request #2122 from ruby/bundle-u

bundle update mutex_m

Author: soutaro

Gemfile.lock

@@ -60,7 +60,7 @@ GEM
     marcel (1.0.4)
     memory_profiler (1.0.2)
     minitest (5.25.1)
-    mutex_m (0.2.0)
+    mutex_m (0.3.0)
     net-protocol (0.2.2)
       timeout
     net-smtp (0.5.0)

test/rbs/collection/config_test.rb

@@ -281,9 +281,9 @@ def test_generate_lock_from_collection_with_manifest_yaml
             source:
               type: stdlib
           - name: mutex_m
-            version: "0"
+            version: "0.3.0"
             source:
-              type: stdlib
+              type: rubygems
           - name: singleton
             version: "0"
             source:
@@ -792,9 +792,9 @@ def test_generate_lockfile__dependency_source
             source:
               type: stdlib
           - name: mutex_m
-            version: "0"
+            version: "0.3.0"
             source:
-              type: stdlib
+              type: rubygems
           - name: securerandom
             version: "0"
             source: