build(deps): upgrade Node.js to 26 and pnpm to 11

Update package manager configuration to pnpm 11.22.0 and Node.js requirement to Node 26 across Dockerfile, GitHub Actions workflows, root package.json, and workspace configurations.

Upgrade dependencies, update GitHub Action versions, and remove deprecated scorecard workflow.

.github/actions/setup-node-pnpm/action.yml

@@ -5,11 +5,11 @@ inputs:
   node-version:
     description: Node.js version to install.
     required: false
-    default: "24"
+    default: "26"
   pnpm-version:
     description: pnpm version to activate via Corepack.
     required: false
-    default: "10"
+    default: "11"
   install:
     description: Whether to run pnpm install.
     required: false
@@ -31,7 +31,7 @@ runs:
   using: composite
   steps:
     - name: Set up Node.js
-      uses: actions/setup-node@53b83947a5a98c8d113130e565377fae1a50d02f # v6
+      uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
       with:
         node-version: ${{ inputs.node-version }}
 
@@ -51,7 +51,7 @@ runs:
 
     - name: Cache pnpm store
       if: ${{ inputs.cache == 'true' }}
-      uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4
+      uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
       with:
         path: ${{ steps.pnpm-store.outputs.path }}
         key: ${{ runner.os }}-pnpm-${{ inputs.pnpm-version }}-store-${{ hashFiles(inputs.cache-dependency-path) }}