Merge pull request #40 from rubygems/fix-ci-badge #17

Job	Run time
RubyGems on Ubuntu (3.0)	5s
RubyGems on Ubuntu (3.1)	10s
RubyGems on Ubuntu (3.2)	10s
RubyGems on macOS (3.0)	14s
RubyGems on macOS (3.1)	20s
RubyGems on macOS (3.2)	16s
RubyGems on Windows (3.0)	1m 14s
RubyGems on Windows (3.1)	2m 21s
RubyGems on Windows (3.2)	2m 51s
RubyGems on Ubuntu (jruby-9.4)	32s
RubyGems on Ubuntu (truffleruby-22)	22s
RubyGems on Windows (mswin)	55s
RubyGems on Ubuntu (ruby-head)	10s
RubyGems on Ubuntu (truffleruby-head)	23s
	10m 3s

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