chore: update 'post' method usages to be uppercased as per HTTP spec

packages/hoppscotch-app/helpers/GQLConnection.ts

@@ -149,7 +149,7 @@ export class GQLConnection {
         .forEach((x) => (finalHeaders[x.key] = x.value))
 
       const reqOptions = {
-        method: "post",
+        method: "POST",
         url,
         headers: {
           ...finalHeaders,
@@ -213,7 +213,7 @@ export class GQLConnection {
       .forEach(({ key, value }) => (finalHeaders[key] = value))
 
     const reqOptions = {
-      method: "post",
+      method: "POST",
       url,
       headers: {
         ...finalHeaders,

packages/hoppscotch-app/helpers/curl/sub_helpers/method.ts

@@ -50,7 +50,7 @@ const getMethodByDeduction = (parsedArguments: parser.Arguments) => {
       R.or(objHasArrayProperty("F", "string"))
     )(parsedArguments)
   )
-    return O.some("post")
+    return O.some("POST")
   else return O.none
 }
 

packages/hoppscotch-app/helpers/oauth.js

@@ -21,7 +21,7 @@ const sendPostRequest = async (url, params) => {
     .map((key) => `${key}=${params[key]}`)
     .join("&")
   const options = {
-    method: "post",
+    method: "POST",
     headers: {
       "Content-type": "application/x-www-form-urlencoded; charset=UTF-8",
     },