chore(linkedin-mcp-server): update image version to 1.4.0 and enhance config (#147)

* feat(linkedin-mcp-server): update image version and enhance config

Updated the LinkedIn MCP server image to version 1.4.0. Added an optional custom user agent configuration for the scraper.

* fix(linkedin-mcp-server): update cookie and user agent names

Author: stickerdaniel

servers/linkedin-mcp-server/server.yaml

@@ -1,5 +1,5 @@
 name: linkedin-mcp-server
-image: stickerdaniel/linkedin-mcp-server:1.3.2
+image: stickerdaniel/linkedin-mcp-server:1.4.0
 type: server
 meta:
   category: business
@@ -12,13 +12,23 @@ meta:
     - networking
 about:
   title: LinkedIn MCP Server
-  description: This MCP server allows Claude and other AI assistants to access your LinkedIn. Scrape LinkedIn profiles and companies, get your recommended jobs, and perform job searches. Set your li_at LinkedIncookie to use this server.
+  description: This MCP server allows Claude and other AI assistants to access your LinkedIn. Scrape LinkedIn profiles and companies, get your recommended jobs, and perform job searches. Set your li_at LinkedIn cookie to use this server.
   icon: https://raw.githubusercontent.com/stickerdaniel/linkedin-mcp-server/main/assets/icons/linkedin.svg
 source:
   project: https://github.com/stickerdaniel/linkedin-mcp-server
 config:
-  description: Configure LinkedIn authentication using your li_at cookie
+  description: Configure LinkedIn authentication and optional user agent
   secrets:
     - name: linkedin-mcp-server.cookie
       env: LINKEDIN_COOKIE
-      example: AQETADxR7bsCqpZlAAACm-lNHKAAA...
+      example: AQETADxR7bsCqpZlAAACm-lNHKAAA...
+  env:
+    - name: USER_AGENT
+      example: "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36"
+      value: '{{linkedin-mcp-server.user_agent}}'
+  parameters:
+    type: object
+    properties:
+      user_agent:
+        type: string
+        description: Custom user agent string (optional, helps avoid detection and cookie login issues)