build(deps): bump boto3 from 1.18.20 to 1.18.21 (#1263)

Bumps [boto3](https://github.com/boto/boto3) from 1.18.20 to 1.18.21.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](https://github.com/boto/boto3/compare/1.18.20...1.18.21)

---
updated-dependencies:
- dependency-name: boto3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Pipfile.lock

@@ -122,11 +122,11 @@
         },
         "boto3": {
             "hashes": [
-                "sha256:1ef5fdbd554d7c5878223ab54d400f02a47b6802f06216c18cbf66bc3fb7f8ca",
-                "sha256:3ab8b36870e130d9c615f1a72ee88071135afa148b47354d5b28b4624860b224"
+                "sha256:00748c760dc30be61c6db4b092718f6a9f8d27c767da0e232695a65adb75cde8",
+                "sha256:59b6e8e79b2114e21388288a06a004f2a9378b1e0fc58466a35da8fb74fe2dd8"
             ],
             "index": "pypi",
-            "version": "==1.18.20"
+            "version": "==1.18.21"
         },
         "botocore": {
             "hashes": [