Update to 2.5.7, rubygems 3.0.3

Author: docker-library-bot

2.5/buster/slim/Dockerfile

@@ -23,8 +23,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby

2.5/stretch/slim/Dockerfile

@@ -23,8 +23,8 @@ RUN set -eux; \
 	} >> /usr/local/etc/gemrc
 
 ENV RUBY_MAJOR 2.5
-ENV RUBY_VERSION 2.5.6
-ENV RUBY_DOWNLOAD_SHA256 7601e4b83f4f17bc1affe091502dd465282ffba0761dea57c071ead21b132cee
+ENV RUBY_VERSION 2.5.7
+ENV RUBY_DOWNLOAD_SHA256 201870e8f58957d542233fef588b1d76f7bf962fea44dcbd2237f4a5899a3f95
 ENV RUBYGEMS_VERSION 3.0.3
 
 # some of ruby's build scripts are written in ruby