Bump cryptography from 2.7 to 3.2 in /requirements

Bumps [cryptography](https://github.com/pyca/cryptography) from 2.7 to 3.2.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/master/CHANGELOG.rst)
- [Commits](pyca/cryptography@2.7...3.2)

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

requirements/main-pinned.txt

@@ -41,23 +41,29 @@ cffi==1.12.3 \
     --hash=sha256:e1ff2748c84d97b065cc95429814cdba39bcbd77c9c85c89344b317dc0d9cbff \
     --hash=sha256:ed851c75d1e0e043cbf5ca9a8e1b13c4c90f3fbd863dacb01c0808e2b5204201 \
     # via cryptography, zstandard
-cryptography==2.7 \
-    --hash=sha256:24b61e5fcb506424d3ec4e18bca995833839bf13c59fc43e530e488f28d46b8c \
-    --hash=sha256:25dd1581a183e9e7a806fe0543f485103232f940fcfc301db65e630512cce643 \
-    --hash=sha256:3452bba7c21c69f2df772762be0066c7ed5dc65df494a1d53a58b683a83e1216 \
-    --hash=sha256:41a0be220dd1ed9e998f5891948306eb8c812b512dc398e5a01846d855050799 \
-    --hash=sha256:5751d8a11b956fbfa314f6553d186b94aa70fdb03d8a4d4f1c82dcacf0cbe28a \
-    --hash=sha256:5f61c7d749048fa6e3322258b4263463bfccefecb0dd731b6561cb617a1d9bb9 \
-    --hash=sha256:72e24c521fa2106f19623a3851e9f89ddfdeb9ac63871c7643790f872a305dfc \
-    --hash=sha256:7b97ae6ef5cba2e3bb14256625423413d5ce8d1abb91d4f29b6d1a081da765f8 \
-    --hash=sha256:961e886d8a3590fd2c723cf07be14e2a91cf53c25f02435c04d39e90780e3b53 \
-    --hash=sha256:96d8473848e984184b6728e2c9d391482008646276c3ff084a1bd89e15ff53a1 \
-    --hash=sha256:ae536da50c7ad1e002c3eee101871d93abdc90d9c5f651818450a0d3af718609 \
-    --hash=sha256:b0db0cecf396033abb4a93c95d1602f268b3a68bb0a9cc06a7cff587bb9a7292 \
-    --hash=sha256:cfee9164954c186b191b91d4193989ca994703b2fff406f71cf454a2d3c7327e \
-    --hash=sha256:e6347742ac8f35ded4a46ff835c60e68c22a536a8ae5c4422966d06946b6d4c6 \
-    --hash=sha256:f27d93f0139a3c056172ebb5d4f9056e770fdf0206c2f422ff2ebbad142e09ed \
-    --hash=sha256:f57b76e46a58b63d1c6375017f4564a28f19a5ca912691fd2e4261b3414b618d \
+cryptography==3.2 \
+    --hash=sha256:9a8580c9afcdcddabbd064c0a74f337af74ff4529cdf3a12fa2e9782d677a2e5 \
+    --hash=sha256:7ef41304bf978f33cfb6f43ca13bb0faac0c99cda33693aa20ad4f5e34e8cb8f \
+    --hash=sha256:87c2fffd61e934bc0e2c927c3764c20b22d7f5f7f812ee1a477de4c89b044ca6 \
+    --hash=sha256:6a8f64ed096d13f92d1f601a92d9fd1f1025dc73a2ca1ced46dcf5e0d4930943 \
+    --hash=sha256:3e17d02941c0f169c5b877597ca8be895fca0e5e3eb882526a74aa4804380a98 \
+    --hash=sha256:6e8a3c7c45101a7eeee93102500e1b08f2307c717ff553fcb3c1127efc9b6917 \
+    --hash=sha256:52a47e60953679eea0b4d490ca3c241fb1b166a7b161847ef4667dfd49e7699d \
+    --hash=sha256:d1cbc3426e6150583b22b517ef3720036d7e3152d428c864ff0f3fcad2b97591 \
+    --hash=sha256:22f8251f68953553af4f9c11ec5f191198bc96cff9f0ac5dd5ff94daede0ee6d \
+    --hash=sha256:f2aa3f8ba9e2e3fd49bd3de743b976ab192fbf0eb0348cebde5d2a9de0090a9f \
+    --hash=sha256:9a07e6d255053674506091d63ab4270a119e9fc83462c7ab1dbcb495b76307af \
+    --hash=sha256:f0e3986f6cce007216b23c490f093f35ce2068f3c244051e559f647f6731b7ae \
+    --hash=sha256:284e275e3c099a80831f9898fb5c9559120d27675c3521278faba54e584a7832 \
+    --hash=sha256:f01c9116bfb3ad2831e125a73dcd957d173d6ddca7701528eff1e7d97972872c \
+    --hash=sha256:bd80bc156d3729b38cb227a5a76532aef693b7ac9e395eea8063ee50ceed46a5 \
+    --hash=sha256:8f0fd8b0751d75c4483c534b209e39e918f0d14232c0d8a2a76e687f64ced831 \
+    --hash=sha256:8a0866891326d3badb17c5fd3e02c926b635e8923fa271b4813cd4d972a57ff3 \
+    --hash=sha256:57b8c1ed13b8aa386cabbfde3be175d7b155682470b0e259fecfe53850967f8a \
+    --hash=sha256:88069392cd9a1e68d2cfd5c3a2b0d72a44ef3b24b8977a4f7956e9e3c4c9477a \
+    --hash=sha256:fb70a4cedd69dc52396ee114416a3656e011fb0311fca55eb55c7be6ed9c8aef \
+    --hash=sha256:e15ac84dcdb89f92424cbaca4b0b34e211e7ce3ee7b0ec0e4f3c55cee65fae5a \
+    --hash=sha256:e4789b84f8dedf190148441f7c5bfe7244782d9cbb194a36e17b91e7d3e1cca9 \
     # via pymysql
 everett[yaml]==1.0.2 \
     --hash=sha256:66c7991c056fd9b1de54c29e2b5004a30209530faef698d6ecfbf24bfbbdd1fb \