node 12 compatibility

package.json

@@ -25,7 +25,7 @@
     "html-minifier": "^3.5.21",
     "iconv-lite": "^0.4.17",
     "langs": "^2.0.0",
-    "lzma-native": "^3.0.8",
+    "lzma-native": "^5.0.0",
     "mime-db": "*",
     "mime-types": "*",
     "mmmagic": "*",
@@ -36,7 +36,7 @@
     "quick-lru": "^1.0.0",
     "request": "*",
     "request-promise-native": "^1.0.5",
-    "sharp": "^0.17.3",
+    "sharp": "^0.22.1",
     "sqlite": "^2.8.0",
     "sqlite3": "*",
     "uuid": "^3.4.0"