Bump freezegun from 0.3.15 to 1.0.0 (pypi#8523)

Bumps [freezegun](https://github.com/spulec/freezegun) from 0.3.15 to 1.0.0.
- [Release notes](https://github.com/spulec/freezegun/releases)
- [Changelog](https://github.com/spulec/freezegun/blob/master/CHANGELOG)
- [Commits](spulec/freezegun@0.3.15...1.0.0)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>
Co-authored-by: Dustin Ingram <di@users.noreply.github.com>

requirements/tests.txt

@@ -72,9 +72,9 @@ fakeredis==1.4.3 \
     --hash=sha256:7ea0866ba5edb40fe2e9b1722535df0c7e6b91d518aa5f50d96c2fff3ea7f4c2 \
     --hash=sha256:aad8836ffe0319ffbba66dcf872ac6e7e32d1f19790e31296ba58445efb0a5c7 \
     # via -r requirements/tests.in
-freezegun==0.3.15 \
-    --hash=sha256:82c757a05b7c7ca3e176bfebd7d6779fd9139c7cb4ef969c38a28d74deef89b2 \
-    --hash=sha256:e2062f2c7f95cc276a834c22f1a17179467176b624cc6f936e8bc3be5535ad1b \
+freezegun==1.0.0 \
+    --hash=sha256:02b35de52f4699a78f6ac4518e4cd3390dddc43b0aeb978335a8f270a2d9668b \
+    --hash=sha256:1cf08e441f913ff5e59b19cc065a8faa9dd1ddc442eaf0375294f344581a0643 \
     # via -r requirements/tests.in
 idna==2.10 \
     --hash=sha256:b307872f855b18632ce0c21c5e45be78c0ea7ae4c15c828c20788b26921eb3f6 \
@@ -163,7 +163,7 @@ selenium==3.141.0 \
 six==1.15.0 \
     --hash=sha256:30639c035cdb23534cd4aa2dd52c3bf48f06e5f4a941509c8bafd8ce11080259 \
     --hash=sha256:8b74bedcbbbaca38ff6d7491d76f2b06b3592611af620f8426e82dddb04a5ced \
-    # via bok-choy, fakeredis, freezegun, packaging, python-dateutil, responses, webtest
+    # via bok-choy, fakeredis, packaging, python-dateutil, responses, webtest
 sortedcontainers==2.2.2 \
     --hash=sha256:4e73a757831fc3ca4de2859c422564239a31d8213d09a2a666e375807034d2ba \
     --hash=sha256:c633ebde8580f241f274c1f8994a665c0e54a17724fecd0cae2f079e09c36d3f \