[ruby/strscan] Bump version

https://github.com/ruby/strscan/commit/df90d541fa

ext/strscan/strscan.c

@@ -22,7 +22,7 @@ extern size_t onig_region_memsize(const struct re_registers *regs);
 
 #include <stdbool.h>
 
-#define STRSCAN_VERSION "1.0.3"
+#define STRSCAN_VERSION "1.0.4"
 
 /* =======================================================================
                          Data Type Definitions

ext/strscan/strscan.gemspec

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 Gem::Specification.new do |s|
   s.name = "strscan"
-  s.version = '1.0.3'
+  s.version = "1.0.4"
   s.summary = "Provides lexical scanning operations on a String."
   s.description = "Provides lexical scanning operations on a String."