update requires.txt

Author: bottle

requirements.txt

@@ -1,10 +1,10 @@
-ansible==2.5.1
+ansible==2.6.18
 apache-libcloud==2.2.1
 asn1crypto==0.24.0
 backports.ssl-match-hostname==3.7.0.1
 certifi==2018.1.18
 chardet==3.0.4
-cryptography==2.1.4
+cryptography==2.3
 docker==4.1.0
 enum34==1.1.6
 gyp==0.1
@@ -18,18 +18,18 @@ keyrings.alt==3.0
 lockfile==0.12.2
 MarkupSafe==1.0
 netaddr==0.7.19
-paramiko==2.0.0
+paramiko==2.0.9
 pyasn1==0.4.2
 pycrypto==2.6.1
 pygobject==3.26.1
 pykerberos==1.1.14
 pyOpenSSL==17.5.0
-pyxdg==0.25
-PyYAML==3.12
-requests==2.18.4
+pyxdg==0.26
+PyYAML==5.1
+requests==2.20.4
 SecretStorage==2.3.1
 simplejson==3.13.2
 six==1.11.0
-urllib3==1.22
+urllib3==1.24.2
 websocket-client==0.57.0
 xmltodict==0.11.0