Bump knapsack from 1.22.0 to 3.1.0

Bumps [knapsack](https://github.com/KnapsackPro/knapsack) from 1.22.0 to 3.1.0.
- [Release notes](https://github.com/KnapsackPro/knapsack/releases)
- [Changelog](https://github.com/KnapsackPro/knapsack/blob/master/CHANGELOG.md)
- [Commits](https://github.com/KnapsackPro/knapsack/compare/v1.22.0...v3.1.0)

---
updated-dependencies:
- dependency-name: knapsack
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -353,7 +353,7 @@ GEM
       kaminari-core (= 1.2.1)
     kaminari-core (1.2.1)
     kgio (2.11.3)
-    knapsack (1.22.0)
+    knapsack (3.1.0)
       rake
     launchy (2.5.0)
       addressable (~> 2.7)