Update minio and passport-saml

Signed-off-by: David Mehren <git@herrmehren.de>

package.json

@@ -65,7 +65,7 @@
     "meta-marked": "git+https://github.com/hedgedoc/meta-marked",
     "method-override": "^3.0.0",
     "minimist": "^1.2.0",
-    "minio": "^7.0.0",
+    "minio": "^7.0.19",
     "moment": "^2.17.1",
     "morgan": "^1.7.0",
     "mysql2": "^2.0.0",
@@ -79,7 +79,7 @@
     "passport-ldapauth": "^3.0.0",
     "passport-local": "^1.0.0",
     "passport-oauth2": "^1.4.0",
-    "passport-saml": "^3.0.0",
+    "passport-saml": "^3.1.2",
     "passport-twitter": "^1.0.4",
     "passport.socketio": "^3.7.0",
     "pdfobject": "^2.0.201604172",