Update eve requirement from <1.2,>1.1 to >1.1,<2.2

Updates the requirements on [eve](https://github.com/pyeve/eve) to permit the latest version.
- [Changelog](https://github.com/pyeve/eve/blob/master/CHANGES.rst)
- [Commits](pyeve/eve@v1.1.1...v2.1.0)

---
updated-dependencies:
- dependency-name: eve
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,5 +1,5 @@
 nose
 mock
 werkzeug>=1.0,<1.1
-eve>1.1,<1.2
+eve>1.1,<2.2
 MarkupSafe>2.0,<2.1