Bump version of ffi dependency

CI was complaining about 1.15.4 being improperly installed, which seemed like a stale cache, but it's easier to just upgrade to the latest one.
DataDog · Mar 30, 2022 · 31d7b2a · 31d7b2a
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commit 31d7b2a
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/gemfiles/ruby_3.0.3_contrib.gemfile.lock b/gemfiles/ruby_3.0.3_contrib.gemfile.lock