Update mcp-publisher CLI v1.1.0 → v1.5.0 to fix MCP Registry publish failure

The old publisher (v1.1.0, Sept 2025) didn't recognize the 2025-12-11 schema
and rejected it as deprecated. Also aligned the validation step schema URL.

Author: IvanBiruk

.github/workflows/main.yml

@@ -113,7 +113,7 @@ jobs:
                   import urllib.request
                   from jsonschema import ValidationError, validate
 
-                  schema_url = "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json"
+                  schema_url = "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json"
 
                   try:
                       with urllib.request.urlopen(schema_url, timeout=30) as response:
@@ -213,7 +213,7 @@ jobs:
       - name: Install MCP Publisher CLI
         if: steps.version-check.outputs.version_changed == 'true' && github.ref == 'refs/heads/main'
         run: |
-          curl -L "https://github.com/modelcontextprotocol/registry/releases/download/v1.1.0/mcp-publisher_1.1.0_$(uname -s | tr '[:upper:]' '[:lower:]')_$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/').tar.gz" | tar xz mcp-publisher
+          curl -L "https://github.com/modelcontextprotocol/registry/releases/download/v1.5.0/mcp-publisher_1.5.0_$(uname -s | tr '[:upper:]' '[:lower:]')_$(uname -m | sed 's/x86_64/amd64/;s/aarch64/arm64/').tar.gz" | tar xz mcp-publisher
           chmod +x mcp-publisher
 
       - name: Login to MCP Registry (GitHub OIDC)