Update activesupport requirement from ~> 3.0.4 to >= 3.0.4, < 6.1.0

[dependabot[bot]]

Updates the requirements on activesupport to permit the latest version.

Commits

• 0c510c7 bumping to 3.1.12
• a7d252b JDOM XXE Protection [CVE-2013-1856]
• 967591b Fix changelog typos [ci skip]
• 16ed3d5 Update changelogs with version/release dates [ci skip]
• 415bf3d bumping to 3.1.11
• d72c25e remove the warning when testing whiny_nil
• ae6864e Update mocha version to 0.13.0 and change requires
• 0591f6d Fix 3-1-stable to work with Mocha >= v0.13.0
• 1b35a85 Update changelogs with release dates and minor improvements [ci skip]
• 7b9bab6 Merge pull request #5896 from sferik/revert_5861
• Additional commits viewable in compare view

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