Update thumbor requirement from ==7.*,>=7.0.6 to ==7.* (#69)

Updates the requirements on [thumbor](https://github.com/thumbor/thumbor) to permit the latest version.
- [Release notes](https://github.com/thumbor/thumbor/releases)
- [Changelog](https://github.com/thumbor/thumbor/blob/master/CHANGELOG)
- [Commits](thumbor/thumbor@7.0.6...7.0.7)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

test_requirements.txt

@@ -1,3 +1,3 @@
 pytest==7.*
-thumbor==7.*,>=7.0.6
+thumbor==7.*
 pytest-cov==3.*,>=3.0.0