add various dependencies

that are not of the default gems starting from Ruby 3.4.0.

Gemfile

@@ -31,5 +31,10 @@ end
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.1", :platforms => [:mingw, :x64_mingw, :mswin]
 
-
 gem "webrick", "~> 1.7"
+
+# various dependencies that are not of the default gems starting from Ruby 3.4.0.
+gem "csv"
+gem "logger"
+gem "base64"
+gem "bigdecimal"

Gemfile.lock

@@ -3,8 +3,11 @@ GEM
   specs:
     addressable (2.8.7)
       public_suffix (>= 2.0.2, < 7.0)
+    base64 (0.2.0)
+    bigdecimal (3.1.9)
     colorator (1.1.0)
     concurrent-ruby (1.3.4)
+    csv (3.3.2)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)
       http_parser.rb (~> 0)
@@ -47,6 +50,7 @@ GEM
     listen (3.9.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    logger (1.6.4)
     mercenary (0.4.0)
     minima (2.5.2)
       jekyll (>= 3.5, < 5.0)
@@ -76,9 +80,13 @@ PLATFORMS
   x86_64-darwin-20
 
 DEPENDENCIES
+  base64
+  bigdecimal
+  csv
   jekyll (~> 4.3.3)
   jekyll-feed (~> 0.12)
   jekyll-sass-converter (~> 2.0)
+  logger
   minima (~> 2.5)
   tzinfo (~> 1.2)
   tzinfo-data