Bump boto3 from 1.14.32 to 1.14.48

Bumps [boto3](https://github.com/boto/boto3) from 1.14.32 to 1.14.48.
- [Release notes](https://github.com/boto/boto3/releases)
- [Changelog](https://github.com/boto/boto3/blob/develop/CHANGELOG.rst)
- [Commits](boto/boto3@1.14.32...1.14.48)

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

requirements.txt

@@ -9,7 +9,7 @@ pandas==1.1.0
 matminer==0.6.3
 autologging
 awscli==1.18.125
-boto3==1.14.32
+boto3==1.14.48
 docopt==0.6.2
 scikit-learn==0.23.2
 taburu==2020.5.9

setup.py

@@ -51,7 +51,7 @@
                       "matminer==0.6.3",
                       "autologging",
                       "awscli==1.18.125",
-                      "boto3==1.14.32",
+                      "boto3==1.14.48",
                       "docopt==0.6.2",
                       "scikit-learn==0.23.2",
                       "taburu==2020.5.9",