Pin python to 3.8.6 (#859)

* Update npm

* Repin

* Make sure python makes it into pinned environment

Co-authored-by: Sarah Bird <birdsarah@mozilla.com>

environment.yaml

@@ -7,26 +7,26 @@ dependencies:
 - click=7.1.2
 - codecov=2.1.11
 - dill=0.3.3
-- geckodriver=0.28.0
-- ipython=7.19.0
+- geckodriver=0.29.0
+- ipython=7.20.0
 - leveldb=1.22
 - localstack=0.11.1.1
 - multiprocess=0.70.11.1
 - nodejs=14.15.1
-- pandas=1.1.5
-- pillow=8.0.1
-- pip=20.3.3
-- pre-commit=2.9.3
+- pandas=1.2.2
+- pillow=8.1.0
+- pip=21.0.1
+- pre-commit=2.10.1
 - psutil=5.8.0
-- pyarrow=2.0.0
-- pytest-cov=2.10.1
-- pytest=6.2.1
+- pyarrow=3.0.0
+- pytest-cov=2.11.1
+- pytest=6.2.2
 - python=3.8.6
 - pyvirtualdisplay=1.3.2
 - redis-py=3.5.3
 - s3fs=0.4.0
 - selenium=3.141.0
-- sentry-sdk=0.19.5
+- sentry-sdk=0.20.2
 - tabulate=0.8.7
 - tblib=1.6.0
 - wget=1.20.1
@@ -35,7 +35,7 @@ dependencies:
   - crontab==0.22.9
   - dataclasses-json==0.5.2
   - domain-utils==0.7.1
-  - flask-cors==3.0.9
+  - flask-cors==3.0.10
   - jsonschema==3.2.0
   - moto-ext==1.3.15.15
   - plyvel==1.3.0