[internal] Update GitHub Actions workflow files

.github/actions/setup-tools/action.yml

@@ -0,0 +1,27 @@
+name: Setup Tools
+description: Installs all tools (Go, Node, Python, .NET, Java, Pulumi, etc.) using mise
+
+inputs:
+  cache:
+    description: Enable caching
+    required: false
+    default: 'false'
+
+runs:
+  using: "composite"
+  steps:
+    - name: Setup mise
+      uses: jdx/mise-action@be3be2260bc02bc3fbf94c5e2fed8b7964baf074 # v3
+      with:
+        # Latest working version. See https://github.com/jdx/mise/discussions/6781
+        version: 2025.10.16
+        github_token: ${{ github.token }}
+        cache_key: "mise-{{platform}}-{{file_hash}}"
+        cache_save: ${{ inputs.cache }}
+
+    - name: Setup Go Cache
+      uses: actions/setup-go@d35c59abb061a4a6fb18e82ac0862c26744d6ab5 # v5.5.0
+      with:
+        go-version: ${{ env.GOVERSION }}
+        cache-dependency-path: "**/*.sum"
+        cache: ${{ inputs.cache }}