Update default native ruby from 3.1.0 to 3.1.3

Author: larskanis

Dockerfile.mri.erb

@@ -52,7 +52,7 @@ RUN gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 409B6B1796C275462A170
 
 # Install native rubies and fix permissions
 COPY build/patches /home/rvm/patches/
-ENV RVM_RUBIES 2.5.9 3.1.0
+ENV RVM_RUBIES 2.5.9 3.1.3
 RUN bash -c " \
       export CFLAGS='-s -O3 -fno-fast-math -fPIC' && \
       for v in ${RVM_RUBIES} ; do \
@@ -134,20 +134,20 @@ axrubies = if platform =~ /x64-mingw-ucrt/
   [
     # Rubyinstaller-3.1.0+ is platform x64-mingw-ucrt
     # parallel=false because 3.2.0-rc1 has undefined references when using a high -j arg
-    ["3.2.0-rc1:3.1.0", "3.1.0", false],
+    ["3.2.0-rc1:3.1.0", "3.1.3", false],
   ]
 elsif platform =~ /x64-mingw32/
   [
     # Rubyinstaller prior to 3.1.0 is platform x64-mingw32
     ["2.6.0:2.5.0:2.4.0", "2.5.9", false],
-    ["3.0.0:2.7.0", "3.1.0", true],
+    ["3.0.0:2.7.0", "3.1.3", true],
   ]
 else
   [
     # Build xruby versions prior ruby2_keywords in parallel using ruby-2.5
     ["2.6.0:2.5.0:2.4.0", "2.5.9", false],
     # Build xruby versions with ruby2_keywords in parallel using ruby-3.x
-    ["3.2.0-rc1:3.1.0:3.0.0:2.7.0", "3.1.0", true],
+    ["3.2.0-rc1:3.1.0:3.0.0:2.7.0", "3.1.3", true],
   ]
 end
 
@@ -244,7 +244,7 @@ COPY build/sudoers /etc/sudoers.d/rake-compiler-dock
 
 RUN find /usr/local/rvm -type d -print0 | sudo xargs -0 chmod g+sw
 RUN bash -c " \
-      rvm alias create default 3.1.0 && \
+      rvm alias create default 3.1.3 && \
       rvm use default \
     "