Update MCP usage guide Docker images (#384)

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docs/toolhive/guides-mcp/github.mdx

@@ -141,7 +141,7 @@ metadata:
   name: github
   namespace: toolhive-system
 spec:
-  image: ghcr.io/github/github-mcp-server:v0.24.0
+  image: ghcr.io/github/github-mcp-server:v0.24.1
   transport: stdio
   proxyPort: 8080
   secrets:

docs/toolhive/guides-mcp/playwright.mdx

@@ -141,7 +141,7 @@ metadata:
   name: playwright
   namespace: toolhive-system
 spec:
-  image: mcr.microsoft.com/playwright/mcp:v0.0.49
+  image: mcr.microsoft.com/playwright/mcp:v0.0.51
   transport: streamable-http
   mcpPort: 8931
   proxyPort: 8080
@@ -175,7 +175,7 @@ metadata:
   name: playwright
   namespace: toolhive-system
 spec:
-  image: mcr.microsoft.com/playwright/mcp:v0.0.49
+  image: mcr.microsoft.com/playwright/mcp:v0.0.51
   transport: streamable-http
   mcpPort: 8931
   proxyPort: 8080
@@ -198,7 +198,7 @@ metadata:
   name: playwright
   namespace: toolhive-system
 spec:
-  image: mcr.microsoft.com/playwright/mcp:v0.0.49
+  image: mcr.microsoft.com/playwright/mcp:v0.0.51
   transport: streamable-http
   mcpPort: 8931
   proxyPort: 8080