chore: Update variable names for the sample scripts (#1072)

* feat: update GAPIC ssamples to be featured in custom emoji guide

* feat: update GAPIC ssamples to be featured in custom emoji guide

* feat: update GAPIC ssamples to be featured in custom emoji guide

* feat: update GAPIC ssamples to be featured in custom emoji guide

* feat: update GAPIC ssamples to be featured in custom emoji guide

* feat: update versions for dependencies

- open
- google-auth-library
- @google-apps/chat
- @grpc/grpc-js

* Apply suggestions from code review

Co-authored-by: Vinay Vyas <69166360+vinay-google@users.noreply.github.com>

* Update create-custom-emoji-user-cred.js

* Update delete-custom-emoji-user-cred.js

* Update get-custom-emoji-user-cred.js

* Update delete-custom-emoji-user-cred.js

* Update get-custom-emoji-user-cred.js

* Update get-custom-emoji-user-cred.js

* Update delete-custom-emoji-user-cred.js

---------

Co-authored-by: Alice Kim <kalice@google.com>
Co-authored-by: Vinay Vyas <69166360+vinay-google@users.noreply.github.com>

Author: 3 people

chat/client-libraries/cloud/create-custom-emoji-user-cred.js

@@ -36,7 +36,7 @@ async function main() {
   const request = {
     custom_emoji: {
       // TODO(developer): Replace EMOJI_NAME here.
-      emoji_name: ":EMOJI_NAME:",
+      emoji_name: "EMOJI_NAME",
       payload: {
         file_content: fileContent,
         filename: filename,

chat/client-libraries/cloud/delete-custom-emoji-user-cred.js

@@ -28,8 +28,8 @@ async function main() {
 
   // Initialize request argument(s)
   const request = {
-    // TODO(developer): Replace CUSTOM_EMOJI_NAME here.
-    name: 'customEmojis/CUSTOM_EMOJI_NAME'
+    // TODO(developer): Replace EMOJI_NAME here.
+    name: 'customEmojis/EMOJI_NAME'
   };
 
   // Make the request

chat/client-libraries/cloud/get-custom-emoji-user-cred.js

@@ -28,8 +28,8 @@ async function main() {
 
   // Initialize request argument(s)
   const request = {
-    // TODO(developer): Replace CUSTOM_EMOJI_NAME here
-    name: 'customEmojis/CUSTOM_EMOJI_NAME'
+    // TODO(developer): Replace EMOJI_NAME here
+    name: 'customEmojis/EMOJI_NAME'
   };
 
   // Make the request