Update dependency helmet to v5.1.0

package.json

@@ -5,7 +5,7 @@
     "ejs": "3.1.8",
     "express": "4.18.1",
     "feedparser": "2.2.10",
-    "helmet": "5.0.2",
+    "helmet": "5.1.0",
     "megalodon": "4.0.1",
     "morgan": "1.10.0",
     "serve-static": "1.15.0",

yarn.lock

@@ -1202,10 +1202,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"helmet@npm:5.0.2":
-  version: 5.0.2
-  resolution: "helmet@npm:5.0.2"
-  checksum: 3fe107f3f73fb6a79173e5599f87a016c69f1c7cc46bcde1c60043ea36e64f893434592890d3c0be68f1d35731f2f2f22094a1cfd70438f9d35740861071dcf3
+"helmet@npm:5.1.0":
+  version: 5.1.0
+  resolution: "helmet@npm:5.1.0"
+  checksum: 076958ed8262b72e77276f9e7e9a5e3628b3a44bf39a64a856e919fd3d5a887d3a29b58c1729dfdb0645afd440e763d29a871e866f1fa658f91a718da82ca052
   languageName: node
   linkType: hard
 
@@ -2107,7 +2107,7 @@ __metadata:
     eslint-plugin-prettier: 4.0.0
     express: 4.18.1
     feedparser: 2.2.10
-    helmet: 5.0.2
+    helmet: 5.1.0
     megalodon: 4.0.1
     morgan: 1.10.0
     prettier: 2.6.2