Release HTTP connector v0.6.0 (#407)

[Changelog](https://github.com/hasura/ndc-http/releases/tag/v0.6.0)

registry/hasura/http/metadata.json

@@ -5,7 +5,7 @@
     "title": "HTTP Connector",
     "logo": "logo.png",
     "tags": ["http", "rest", "api", "openapi"],
-    "latest_version": "v0.5.0"
+    "latest_version": "v0.6.0"
   },
   "author": {
     "support_email": "[email protected]",
@@ -16,13 +16,6 @@
   "is_hosted_by_hasura": true,
   "source_code": {
     "is_open_source": true,
-    "repository": "https://github.com/hasura/ndc-http",
-    "version": [
-      {
-        "tag": "v0.5.0",
-        "hash": "2280487ec010799c66e5354a7aeaca42920b8430",
-        "is_verified": true
-      }
-    ]
+    "repository": "https://github.com/hasura/ndc-http"
   }
 }

registry/hasura/http/releases/v0.6.0/connector-packaging.json

@@ -0,0 +1,11 @@
+{
+  "version": "v0.6.0",
+  "uri": "https://github.com/hasura/ndc-http/releases/download/v0.6.0/connector-definition.tgz",
+  "checksum": {
+    "type": "sha256",
+    "value": "47c7107e4a6f97ddc396aed99e16bd3399879750869d543d01ba5b998ae6691b"
+  },
+  "source": {
+    "hash": "588255ca34d579abdac5f46ba5e50b07f9810e1f"
+  }
+}