Bump aiohttp from 3.6.3 to 3.7.1

Bumps [aiohttp](https://github.com/aio-libs/aiohttp) from 3.6.3 to 3.7.1.
- [Release notes](https://github.com/aio-libs/aiohttp/releases)
- [Changelog](https://github.com/aio-libs/aiohttp/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiohttp@v3.6.3...v3.7.1)

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

requirements/default.txt

@@ -1,19 +1,39 @@
 -c ./constraints.txt
 
-aiohttp==3.6.3 \
-    --hash=sha256:1a4160579ffbc1b69e88cb6ca8bb0fbd4947dfcbf9fb1e2a4fc4c7a4a986c1fe \
-    --hash=sha256:fb83326d8295e8840e4ba774edf346e87eca78ba8a89c55d2690352842c15ba5 \
-    --hash=sha256:470e4c90da36b601676fe50c49a60d34eb8c6593780930b1aa4eea6f508dfa37 \
-    --hash=sha256:a885432d3cabc1287bcf88ea94e1826d3aec57fd5da4a586afae4591b061d40d \
-    --hash=sha256:c506853ba52e516b264b106321c424d03f3ddef2813246432fa9d1cefd361c81 \
-    --hash=sha256:797456399ffeef73172945708810f3277f794965eb6ec9bd3a0c007c0476be98 \
-    --hash=sha256:60f4caa3b7f7a477f66ccdd158e06901e1d235d572283906276e3803f6b098f5 \
-    --hash=sha256:2ad493de47a8f926386fa6d256832de3095ba285f325db917c7deae0b54a9fc8 \
-    --hash=sha256:319b490a5e2beaf06891f6711856ea10591cfe84fe9f3e71a721aa8f20a0872a \
-    --hash=sha256:66d64486172b032db19ea8522328b19cfb78a3e1e5b62ab6a0567f93f073dea0 \
-    --hash=sha256:206c0ccfcea46e1bddc91162449c20c72f308aebdcef4977420ef329c8fcc599 \
-    --hash=sha256:687461cd974722110d1763b45c5db4d2cdee8d50f57b00c43c7590d1dd77fc5c \
-    --hash=sha256:698cd7bc3c7d1b82bb728bae835724a486a8c376647aec336aa21a60113c3645
+aiohttp==3.7.1 \
+    --hash=sha256:6072fd5b635b276071c2eda77931adb6254a6271645a260c63f7dd4a0872b04b \
+    --hash=sha256:fb7d473b5faa75341f4acb659267d16f300ebd28a7575b5c58cc467bfabb0fd4 \
+    --hash=sha256:729deb9d0f56211ea4657c7d20ab134c0403173308d9ba21debe20d35a37302c \
+    --hash=sha256:00f258b8b1e40f87358095ef62ec0547df3f1bd30ce228af98ffe5aad4aaf864 \
+    --hash=sha256:00496dc15c3dd921218664b7aa55405d9032cb9523ccf812835ffc5e229d4b8e \
+    --hash=sha256:af8470ed2420dc9d6edcbc255204edbf3d3ba9eaa94bc1c3a470e328722a0fa2 \
+    --hash=sha256:6c971a9728957df5e1cd7dda3a557382ca965f7d8d038f901c7c60fc502b9245 \
+    --hash=sha256:52ba0350c03814f30156f65c76a303275fb616e81e70e345b066c761280f6762 \
+    --hash=sha256:910b1f98412690341aaa73ae70ee185da0dbd6768de7b89c5b6c805119eff4a3 \
+    --hash=sha256:1daa3fe52f632c51b064804a23df40bd1089e337b131f29b4bde2968ad414ed8 \
+    --hash=sha256:4f9395802ca6d133e5106f4d328949fcb22c3f5ee65e87c1e586d5f5952d3397 \
+    --hash=sha256:a04dc48f0117089860200847f24862ac084e0f25454c7507b40ce2715f92197b \
+    --hash=sha256:4fbe2e7642f9c78474cc5819420b77fc20de2114e0139838332b428aa14e1e07 \
+    --hash=sha256:9e3ad780feccf411c300705dd56226bdbc991ee260138bd1b5059a4674176513 \
+    --hash=sha256:1b328022c11531b174281736a20e464d7c9ca390232f1b2cca6f77074c438859 \
+    --hash=sha256:628c9f2a590a0be02967ce014255868e8e6dc780649677ab43f87f8c3114e89d \
+    --hash=sha256:a6fa0dea87eec5179e4dc8974d8f20385ed030df272c64b2db75db62be3f3dd7 \
+    --hash=sha256:e51141d86d19c641c1c52f04095a8af5bf1208182b3a0bc16144bce050d3f8f5 \
+    --hash=sha256:d6ec3d2c49353756f781111c0c2024ae422ba2338bf179940c298d4099fda277 \
+    --hash=sha256:21d6b65bb3e14e82d358fa2d7ed193d1dae6592b79525ce484e58a65fcfb57c9 \
+    --hash=sha256:4c6f3a389b8d6509a8d7b6639ec8bd50418a5a81e821f38ddec0d9226e4998b6 \
+    --hash=sha256:26c1264409ca2d76b57ead2f5c2d22cb4510682f35e449c3a3afa98d4a7be462 \
+    --hash=sha256:4d14d823e8c017be21e740d169bd9142fdfc8cc124954787e1e6336dbe1b8612 \
+    --hash=sha256:85dbf57ca00a4b01e4a31bd27971e420984ce9075cf462dd02d6c0c9b537e29c \
+    --hash=sha256:96ce3cd77e0fa4ad3c579346d9796b837a58a094881b22e974b6c3df98cf8e4a \
+    --hash=sha256:c49905707caf50a516e407c6e0381f45d76781b1ee1f5ecde2a624961768f2fd \
+    --hash=sha256:08dabb185c6af8b741c315c0f871ea63267f3b3f835e77743f9270c44a3b422c \
+    --hash=sha256:db38a398227b3faac6bf8e6da806a2a4d2cbc3dbd0aa8b9f76e5624539a756db \
+    --hash=sha256:27dce131d4283a30045c7af5ae9faf07f2bdaa89d845bd3b9a3d3dabc730f06f \
+    --hash=sha256:a86c99e7bca0909942adc51411e57d15ef64604cc0f4ecf3bf0a24a634264f3e \
+    --hash=sha256:38768355d2f430b32b6013b5a274d74458f65db618c4f4721cd24db4586acf10 \
+    --hash=sha256:8d194780edba342302472ae7caf6397293128f906e5e64bd3fe209462ff9e1c1 \
+    --hash=sha256:04f9d70f6c4d089be5068d7df6281e638f6820d4f1b1ec3dc012b0b43fa997d2
 toml==0.10.1 \
     --hash=sha256:bda89d5935c2eac546d648028b9901107a595863cb36bae0c73ac804a9b4ce88 \
     --hash=sha256:926b612be1e5ce0634a2ca03470f95169cf16f939018233a670519cb4ac58b0f