Update sourcegraph-langserver-http commit hash to 312f5f4

Author: renovate-bot

package.json

@@ -125,7 +125,7 @@
     "@sourcegraph/vscode-ws-jsonrpc": "0.0.3-fork",
     "prettier": "^1.16.4",
     "rxjs": "^6.3.3",
-    "sourcegraph-langserver-http": "https://github.com/sourcegraph/sourcegraph-langserver-http#0b0173feef37d1f4f68d881c95ac3f4c97bfedb3",
+    "sourcegraph-langserver-http": "https://github.com/sourcegraph/sourcegraph-langserver-http#312f5f464576be304f5259cd0a76227b148daa47",
     "tagged-template-noop": "^2.1.0",
     "vscode-jsonrpc": "^4.0.0",
     "vscode-languageserver-protocol": "^3.14.1",

yarn.lock

@@ -5060,9 +5060,10 @@ source-map@^0.5.0, source-map@^0.5.3, source-map@^0.5.6:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.5.7.tgz#8a039d2d1021d22d1ea14c80d8ea468ba2ef3fcc"
   integrity sha1-igOdLRAh0i0eoUyA2OpGi6LvP8w=
 
-"sourcegraph-langserver-http@https://github.com/sourcegraph/sourcegraph-langserver-http#0b0173feef37d1f4f68d881c95ac3f4c97bfedb3":
+"sourcegraph-langserver-http@https://github.com/sourcegraph/sourcegraph-langserver-http#312f5f464576be304f5259cd0a76227b148daa47":
   version "0.0.0-DEVELOPMENT"
-  resolved "https://github.com/sourcegraph/sourcegraph-langserver-http#0b0173feef37d1f4f68d881c95ac3f4c97bfedb3"
+  uid "312f5f464576be304f5259cd0a76227b148daa47"
+  resolved "https://github.com/sourcegraph/sourcegraph-langserver-http#312f5f464576be304f5259cd0a76227b148daa47"
   dependencies:
     vscode-languageserver-types "^3.12.0"