Bump omnibus-software from `6909d44` to `70b0061` in /omnibus

[dependabot-preview[bot]]

Bumps omnibus-software from 6909d44 to 70b0061.

Commits

• 70b0061 Merge pull request #1210 from chef/remove_dupe
• 2e0602c Remove duplicate cleanup entry
• f4d4151 Merge pull request #1209 from chef/more_more_more_cleanup
• bae95ee Fixup the cleanup
• 9f74912 Merge pull request #1208 from chef/more_more_more_cleanup
• 236b226 Remove a few more files from our ruby installs
• 6a7d5cb Merge pull request #1207 from chef/more_more_more_cleanup
• 58a35ba Move some more gem cleanup from chef/chef to all ruby projects
• See full diff in compare view

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[dependabot-preview[bot]]

Superseded by #3005.