Upgrade the eight shipped dependencies carrying advisories

Clears every shipped finding the SBOM scan reported: pyjwt 2.13.0, idna 3.19,
axios 1.20.0, postcss 8.5.26, dompurify 3.4.14, nanoid 3.3.18, follow-redirects
1.16.0, form-data 4.0.6. All in-major bumps inside ranges the manifests already
allowed, so this is a lockfile refresh rather than a migration.

The axios and dompurify floors were raised to match, since the old ones still
nominally admitted the vulnerable range.

The PyJWT allowlist entry was removed rather than kept - it stopped matching once
the upgrade landed.

Verified: full suite 2161 passed, frontend 273 passed, build clean, npm audit
--omit=dev reports 0 vulnerabilities.

requirements.txt

@@ -434,9 +434,9 @@ greenlet==3.5.0 ; platform_machine == 'AMD64' or platform_machine == 'WIN32' or
     --hash=sha256:f8c30c2225f40dd76c50790f0eb3b5c7c18431efb299e2782083e1981feed243 \
     --hash=sha256:fa94cb2288681e3a11645958f1871d48ee9211bd2f66628fdace505927d6e564
     # via sqlalchemy
-idna==3.13 \
-    --hash=sha256:585ea8fe5d69b9181ec1afba340451fba6ba764af97026f92a91d4eef164a242 \
-    --hash=sha256:892ea0cde124a99ce773decba204c5552b69c3c67ffd5f232eb7696135bc8bb3
+idna==3.19 \
+    --hash=sha256:5e0811a4383b21dc5838069f801c4fb62113b7447663d2530d2bd6e77b49bf15 \
+    --hash=sha256:815e7be7a7806d54abb586dc943addc79e8b2ee16915059658cbeff4b1b43bf4
     # via
     #   email-validator
     #   requests
@@ -593,9 +593,9 @@ pycparser==3.0 ; implementation_name != 'PyPy' and platform_python_implementatio
     --hash=sha256:600f49d217304a5902ac3c37e1281c9fe94e4d0489de643a9504c5cdfdfc6b29 \
     --hash=sha256:b727414169a36b7d524c1c3e31839a521725078d7b2ff038656844266160a992
     # via cffi
-pyjwt==2.12.1 \
-    --hash=sha256:28ca37c070cad8ba8cd9790cd940535d40274d22f80ab87f3ac6a713e6e8454c \
-    --hash=sha256:c74a7a2adf861c04d002db713dd85f84beb242228e671280bf709d765b03672b
+pyjwt==2.13.0 \
+    --hash=sha256:41571c89ca91598c79e8ef18a2d07367d4810fbbd6f637794879baf1b7703423 \
+    --hash=sha256:66adcc2aff09b3f1bbd95fc1e1577df8ac8723c978552fd43304c8a290ac5728
     # via flask-jwt-extended
 pymysql==1.1.3 \
     --hash=sha256:8164ba62c552f6105f3b11753352d0f16b90d1703ba67d81923d5a8a5d1c5289 \