chore: sync AgentMail lockfile

Record the existing AgentMail development dependency so frozen installs and CI can resolve the cumulative connection branch.

Co-Authored-By: Paperclip <noreply@paperclip.ing>

pnpm-lock.yaml

@@ -34,6 +34,9 @@ importers:
       '@playwright/test':
         specifier: ^1.62.1
         version: 1.62.1
+      agentmail:
+        specifier: ^0.5.14
+        version: 0.5.20
       cross-env:
         specifier: ^10.1.0
         version: 10.1.0
@@ -5635,6 +5638,15 @@ packages:
     resolution: {integrity: sha512-kja8j7PjmncONqaTsB8fQ+wE2mSU2DJ9D4XKoJ5PFWIdRMa6SLSN1ff4mOr4jCbfRSsxR4keIiySJU0N9T5hIQ==}
     engines: {node: '>= 8.0.0'}
 
+  agentmail@0.5.20:
+    resolution: {integrity: sha512-EA1QAwxkkbH2fUZ8hC/hWZzDsGBV7b50c5LEHcwFi8/e6SArB+U50fDXBMxcbn8jh/UDeNEJZncdYxicrN64SQ==}
+    engines: {node: '>=18.0.0'}
+    peerDependencies:
+      '@x402/fetch': ^2
+    peerDependenciesMeta:
+      '@x402/fetch':
+        optional: true
+
   aggregate-error@3.1.0:
     resolution: {integrity: sha512-4I7Td01quW/RpocfNayFdFVk1qSuoh0E7JrbRJ16nH01HhKFQ88INq9Sd+nd72zqRySlr9BmDA8xlEJ6vJMrYA==}
     engines: {node: '>=8'}
@@ -13563,6 +13575,13 @@ snapshots:
       humanize-ms: 1.2.1
     optional: true
 
+  agentmail@0.5.20:
+    dependencies:
+      ws: 8.21.3
+    transitivePeerDependencies:
+      - bufferutil
+      - utf-8-validate
+
   aggregate-error@3.1.0:
     dependencies:
       clean-stack: 2.2.0