fix(security): pyyaml version for sec

fix(security): pyyaml version for sec

Author: andre-filho

requirements.txt

@@ -1,30 +1,31 @@
-argh==0.26.2    
-atomicwrites==1.2.1     
-attrs==18.2.0    
+argh==0.26.2
+atomicwrites==1.2.1
+attrs==18.2.0
 certifi==2018.11.29
-chardet==3.0.4     
-codacy-coverage==1.3.11    
-codeclimate-test-reporter==0.2.3     
-colorama==0.4.1     
-colored==1.3.93    
-coverage==4.5.2     
-docopt==0.6.2     
-idna==2.8       
-more-itertools==5.0.0     
-pathlib==1.0.1     
-pathtools==0.1.2     
-pip==18.1      
-pluggy==0.8.0     
-py==1.7.0     
-pycodestyle==2.4.0     
-pytest==4.0.2     
-pytest-cov==2.6.0     
-pytest-watch==4.2.0     
-PyYAML==3.13      
-requests==2.21.0    
-setuptools==40.6.3    
-six==1.12.0    
-urllib3==1.24.1    
-watchdog==0.9.0     
-wheel==0.32.3
+chardet==3.0.4
+codacy-coverage==1.3.11
+codeclimate-test-reporter==0.2.3
+colorama==0.4.1
+colored==1.3.93
+coverage==4.5.2
+docopt==0.6.2
+idna==2.8
+more-itertools==4.3.0
+pathlib==1.0.1
+pathtools==0.1.2
+pip==18.1
+pluggy==0.8.0
+py==1.7.0
+pycodestyle==2.4.0
+pytest==4.0.1
+pytest-cov==2.6.0
+pytest-watch==4.2.0
+pyyaml>=4.2b1
+requests==2.21.0
+setuptools==40.6.2
+six==1.12.0
+urllib3==1.24.1
+watchdog==0.9.0
+wheel==0.32.2
+
 twine==1.12.1