Bump python-dateutil from 2.7.4 to 2.7.5 (#4975)

Bumps [python-dateutil](https://dateutil.readthedocs.io) from 2.7.4 to 2.7.5.

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements/main.txt

@@ -436,9 +436,9 @@ pyramid-tm==2.2.1 \
 pyramid==1.9.2 \
     --hash=sha256:600f12e0d11211a55c2da970120af33214f77607ed45caba6af6c891afeaa771 \
     --hash=sha256:cf89a48cb899291639686bf3d4a883b39e496151fa4871fb83cc1a3200d5b925
-python-dateutil==2.7.4 \
-    --hash=sha256:2f13d3ea236aeb237e7258d5729c46eafe1506fd7f8507f34730734ed8b37454 \
-    --hash=sha256:f7cde3aecf8a797553d6ec49b65f0fbcffe7ffb971ccac452d181c28fd279936
+python-dateutil==2.7.5 \
+    --hash=sha256:063df5763652e21de43de7d9e00ccf239f953a832941e37be541614732cdfc93 \
+    --hash=sha256:88f9287c0174266bb0d8cedd395cfba9c58e87e5ad86b2ce58859bc11be3cf02
 python-editor==1.0.3 \
     --hash=sha256:a3c066acee22a1c94f63938341d4fb374e3fdd69366ed6603d7b24bed1efc565
 pytz==2018.6 \

requirements/tests.txt

@@ -137,9 +137,9 @@ pytest-postgresql==1.3.4 \
 pytest==3.9.3 \
     --hash=sha256:a9e5e8d7ab9d5b0747f37740276eb362e6a76275d76cebbb52c6049d93b475db \
     --hash=sha256:bf47e8ed20d03764f963f0070ff1c8fda6e2671fc5dd562a4d3b7148ad60f5ca
-python-dateutil==2.7.4 \
-    --hash=sha256:2f13d3ea236aeb237e7258d5729c46eafe1506fd7f8507f34730734ed8b37454 \
-    --hash=sha256:f7cde3aecf8a797553d6ec49b65f0fbcffe7ffb971ccac452d181c28fd279936
+python-dateutil==2.7.5 \
+    --hash=sha256:063df5763652e21de43de7d9e00ccf239f953a832941e37be541614732cdfc93 \
+    --hash=sha256:88f9287c0174266bb0d8cedd395cfba9c58e87e5ad86b2ce58859bc11be3cf02
 redis==2.10.6 \
     --hash=sha256:8a1900a9f2a0a44ecf6e8b5eb3e967a9909dfed219ad66df094f27f7d6f330fb \
     --hash=sha256:a22ca993cea2962dbb588f9f30d0015ac4afcc45bee27d3978c0dbe9e97c6c0f