Bump idna from 3.6 to 3.7 in /for_developers/regression_test (#3306)

Bumps [idna](https://github.com/kjd/idna) from 3.6 to 3.7.

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

for_developers/regression_test/requirements.txt

@@ -314,9 +314,9 @@ gunicorn==21.2.0 \
     --hash=sha256:3213aa5e8c24949e792bcacfc176fef362e7aac80b76c56f6b5122bf350722f0 \
     --hash=sha256:88ec8bff1d634f98e61b9f65bc4bf3cd918a90806c6f5c48bc5603849ec81033
     # via mlflow
-idna==3.6 \
-    --hash=sha256:9ecdbbd083b06798ae1e86adcbfe8ab1479cf864e4ee30fe4e46a003d12491ca \
-    --hash=sha256:c05567e9c24a6b9faaa835c4821bad0590fbb9d5779e7caa6e1cc4978e7eb24f
+idna==3.7 \
+    --hash=sha256:028ff3aadf0609c1fd278d8ea3089299412a7a8b9bd005dd08b9f8285bcb5cfc \
+    --hash=sha256:82fee1fc78add43492d3a1898bfa6d8a904cc97d8427f683ed8e798d07761aa0
     # via requests
 importlib-metadata==6.11.0 \
     --hash=sha256:1231cf92d825c9e03cfc4da076a16de6422c863558229ea0b22b675657463443 \