fix(deps): update dependency @apollo/client to v3.1.5

package.json

@@ -9,7 +9,7 @@
     "url": "https://gitlab.coko.foundation/simplej/simplej"
   },
   "dependencies": {
-    "@apollo/client": "3.1.4",
+    "@apollo/client": "3.1.5",
     "@apollo/react-testing": "3.1.4",
     "@babel/core": "7.11.6",
     "@guardian/prosemirror-invisibles": "1.2.1",

yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
-"@apollo/client@3.1.4":
-  version "3.1.4"
-  resolved "https://registry.yarnpkg.com/@apollo/client/-/client-3.1.4.tgz#2848a9f29619275df9af55966c4f5984e31cea6e"
-  integrity sha512-XPZ2eL+0GN25FazEOAVAvEyAzWPVsHeo+DgG/45d4Rb+srzPN+vmRgpQL5TdX2BYJoPd04J/g8OZwYUEKL8laA==
+"@apollo/client@3.1.5":
+  version "3.1.5"
+  resolved "https://registry.yarnpkg.com/@apollo/client/-/client-3.1.5.tgz#5865f5c32f061cd520459c5809e8debea6f4886c"
+  integrity sha512-nU/KpqzKN27iwVQwGvPaCkTH/+rNGPoXKr60ki02I8jPBIKXyePPov85Ro9phGxuBhLNqGYeP0uAUN0S+HlF1Q==
   dependencies:
     "@types/zen-observable" "^0.8.0"
     "@wry/context" "^0.5.2"