Bump pytz from 2021.1 to 2021.3

Bumps [pytz](https://github.com/stub42/pytz) from 2021.1 to 2021.3.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2021.1...release_2021.3)

---
updated-dependencies:
- dependency-name: pytz
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

poetry.lock

@@ -344,7 +344,7 @@ six = ">=1.5"
 
 [[package]]
 name = "pytz"
-version = "2021.1"
+version = "2021.3"
 description = "World timezone definitions, modern and historical"
 category = "main"
 optional = false
@@ -455,7 +455,7 @@ testing = ["pytest (>=4.6)", "pytest-checkdocs (>=2.4)", "pytest-flake8", "pytes
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.6"
-content-hash = "72e64e2e0ce9cf69f807d9b5d6f9959b90cf84f78314d379ffab7cf9ad84a388"
+content-hash = "e9896aeb8f4e0df9cb3fa2ea392158455df2e13e73b45348d1e8b7f98c4f8dff"
 
 [metadata.files]
 atomicwrites = [
@@ -619,8 +619,8 @@ python-dateutil = [
     {file = "python_dateutil-2.8.2-py2.py3-none-any.whl", hash = "sha256:961d03dc3453ebbc59dbdea9e4e11c5651520a876d0f4db161e8674aae935da9"},
 ]
 pytz = [
-    {file = "pytz-2021.1-py2.py3-none-any.whl", hash = "sha256:eb10ce3e7736052ed3623d49975ce333bcd712c7bb19a58b9e2089d4057d0798"},
-    {file = "pytz-2021.1.tar.gz", hash = "sha256:83a4a90894bf38e243cf052c8b58f381bfe9a7a483f6a9cab140bc7f702ac4da"},
+    {file = "pytz-2021.3-py2.py3-none-any.whl", hash = "sha256:3672058bc3453457b622aab7a1c3bfd5ab0bdae451512f6cf25f64ed37f5b87c"},
+    {file = "pytz-2021.3.tar.gz", hash = "sha256:acad2d8b20a1af07d4e4c9d2e9285c5ed9104354062f275f3fcd88dcef4f1326"},
 ]
 pyyaml = [
     {file = "PyYAML-6.0-cp310-cp310-macosx_10_9_x86_64.whl", hash = "sha256:d4db7c7aef085872ef65a8fd7d6d09a14ae91f691dec3e87ee5ee0539d516f53"},

pyproject.toml

@@ -23,7 +23,7 @@ python = "^3.6"
 google-auth = "2.2.1"
 google-api-python-client = "2.23.0"
 icalendar = "4.0.7"
-pytz = "2021.1"
+pytz = "2021.3"
 PyYAML = "6.0"
 fire = "0.4.0"