Update cryptography requirement from >=2.6,<39.0 to >=2.6,<40.0 (#878)

Updates the requirements on [cryptography](https://github.com/pyca/cryptography) to permit the latest version.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pyca/cryptography/compare/2.6...39.0.0)

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

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diff --git a/pyproject.toml b/pyproject.toml
index 827cb403c54b3a7f698e6208729f70c94c862871..5b99224279cccee9187ac42b36f43b53441a721a 100644 (file)
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ h2 = {version=">=4.1.0", optional=true, python=">=3.6.2"}
 requests-toolbelt = {version=">=0.9.1,<0.11.0", optional=true}
 requests = {version="^2.23.0", optional=true}
 idna = {version=">=2.1,<4.0", optional=true}
-cryptography = {version=">=2.6,<39.0", optional=true}
+cryptography = {version=">=2.6,<40.0", optional=true}
 trio = {version=">=0.14,<0.23", optional=true}
 curio = {version="^1.2", optional=true}
 sniffio = {version="^1.1", optional=true}