build(deps-dev): bump bigdecimal from 3.1.7 to 3.1.8

[dependabot[bot]]

Bumps bigdecimal from 3.1.7 to 3.1.8.

Release notes

Sourced from bigdecimal's releases.

v3.1.8

What's Changed

• Restore TruffleRuby on CI by @​andrykonchin in ruby/bigdecimal#292
• Fix memory leak in VpAlloc by exception by @​mrkn in ruby/bigdecimal#294
• Add missing documents by @​nobu in ruby/bigdecimal#277
• Provide a 'Changelog' link on rubygems.org/gems/bigdecimal by @​mark-young-atg in ruby/bigdecimal#281

New Contributors

• @​andrykonchin made their first contribution in ruby/bigdecimal#292
• @​mark-young-atg made their first contribution in ruby/bigdecimal#281

Full Changelog: https://github.com/ruby/bigdecimal/compare/v3.1.7...v3.1.8

Changelog

Sourced from bigdecimal's changelog.

3.1.8

• Add missing documents GH-277

  @​nobu

• Fix memory leak in VpAlloc GH-294 GH-290

  Reoprted by @​MaxLap

Commits

• ae3915b Bump up to 3.1.8
• bd49f16 CHANGES: Add note for 3.1.7
• 9e16b26 CHANGES: Add 3.1.8 entry
• a564961 CHANGES: Add 3.1.7 entry
• 4b54be5 Provide a 'Changelog' link on rubygems.org/gems/bigdecimal (#281)
• 381340a Add missing documents (#277)
• be80c3f Fix memory leak in VpAlloc by exception (#294)
• ccdd8d2 CI: Remove macos-latest 2.5
• af1214b Merge pull request #292 from andrykonchin/ak/restore-truffleruby-on-ci
• 69674e8 Restore TruffleRuby on CI
• See full diff in compare view

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