Fixes regexp perf

app/finders/interesting_findings/duplicator_installer_log.rb

@@ -9,7 +9,7 @@ module WPScan
         def aggressive(_opts = {})
           path = 'installer-log.txt'
 
-          return unless target.head_and_get(path).body =~ /DUPLICATOR INSTALL-LOG/
+          return unless /DUPLICATOR INSTALL-LOG/.match?(target.head_and_get(path).body)
 
           Model::DuplicatorInstallerLog.new(
             target.url(path),

app/finders/interesting_findings/mu_plugins.rb

@@ -10,7 +10,7 @@ module WPScan
           pattern = %r{#{target.content_dir}/mu\-plugins/}i
 
           target.in_scope_uris(target.homepage_res) do |uri|
-            next unless uri.path =~ pattern
+            next unless uri.path&.match?(pattern)
 
             url = target.url('wp-content/mu-plugins/')
 

app/finders/interesting_findings/upload_sql_dump.rb

@@ -12,7 +12,7 @@ module WPScan
           path = 'wp-content/uploads/dump.sql'
           res  = target.head_and_get(path, [200], get: { headers: { 'Range' => 'bytes=0-3000' } })
 
-          return unless res.body =~ SQL_PATTERN
+          return unless SQL_PATTERN.match?(res.body)
 
           Model::UploadSQLDump.new(
             target.url(path),