Update bundled gems list as of 2024-05-07

NEWS.md

@@ -73,7 +73,7 @@ The following bundled gems are promoted from default gems.
 * mutex_m 0.2.0
 * getoptlong 0.2.1
 * base64 0.2.0
-* bigdecimal 3.1.7
+* bigdecimal 3.1.8
 * observer 0.1.2
 * abbrev 0.1.2
 * resolv-replace 0.1.1

gems/bundled_gems

@@ -25,7 +25,7 @@ racc            1.7.3   https://github.com/ruby/racc
 mutex_m         0.2.0   https://github.com/ruby/mutex_m
 getoptlong      0.2.1   https://github.com/ruby/getoptlong
 base64          0.2.0   https://github.com/ruby/base64
-bigdecimal      3.1.7   https://github.com/ruby/bigdecimal
+bigdecimal      3.1.8   https://github.com/ruby/bigdecimal
 observer        0.1.2   https://github.com/ruby/observer
 abbrev          0.1.2   https://github.com/ruby/abbrev
 resolv-replace  0.1.1   https://github.com/ruby/resolv-replace