Update dependency sharp to ^0.33.5 (#722)

| datasource | package | from   | to     |
| ---------- | ------- | ------ | ------ |
| npm        | sharp   | 0.17.3 | 0.33.5 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

example/zoo/package.json

@@ -15,7 +15,7 @@
     "pug": "^2.0.0-beta.12",
     "request": "^2.81.0",
     "restler": "^3.4.0",
-    "sharp": "^0.17.3",
+    "sharp": "^0.33.5",
     "sqlite3": "^3.1.8",
     "uuid": "^9.0.1",
     "winston": "^2.4.7"