Update GitHub Actions workflows. (#468)

This PR was automatically generated by the
update-native-provider-workflows workflow in the pulumi/ci-mgmt repo,
from commit ea6479fcbca4b3b86182ffdd8731b26746795508.

---------

Co-authored-by: Eron Wright <eronwright@gmail.com>
Co-authored-by: Eron Wright <eron@pulumi.com>

.github/workflows/weekly-pulumi-update.yml

@@ -26,9 +26,7 @@ env:
   GOVERSION: 1.21.x
   NODEVERSION: 20.x
   PYTHONVERSION: "3.11"
-  DOTNETVERSION: |
-    6.0.x
-    3.1.301
+  DOTNETVERSION: 8.0.x
   JAVAVERSION: "11"
   AWS_REGION: us-west-2
   PULUMI_API: https://api.pulumi-staging.io
@@ -55,7 +53,7 @@ jobs:
       with:
         lfs: true
     - name: Install Go
-      uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
+      uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
       with:
         go-version: ${{ env.GOVERSION }}
         cache-dependency-path: "**/*.sum"
@@ -66,16 +64,16 @@ jobs:
     - name: Install Pulumi CLI
       uses: pulumi/actions@13b8b7177d6fb736766875dac9b78aab07bd785f # v6.0.1
     - name: Setup DotNet
-      uses: actions/setup-dotnet@87b7050bc53ea08284295505d98d2aa94301e852 # v4.2.0
+      uses: actions/setup-dotnet@3951f0dfe7a07e2313ec93c75700083e2005cbab # v4.3.0
       with:
         dotnet-version: ${{ env.DOTNETVERSION }}
     - name: Setup Node
-      uses: actions/setup-node@39370e3970a6d050c480ffad4ff0ed4d3fdee5af # v4.1.0
+      uses: actions/setup-node@1d0ff469b7ec7b3cb9d8673fde0c81c44821de2a # v4.2.0
       with:
         node-version: ${{ env.NODEVERSION }}
         registry-url: https://registry.npmjs.org
     - name: Setup Python
-      uses: actions/setup-python@0b93645e9fea7318ecaed2b359559ac225c90a2b # v5.3.0
+      uses: actions/setup-python@42375524e23c412d93fb67b49958b491fce71c38 # v5.4.0
       with:
         python-version: ${{ env.PYTHONVERSION }}
     - name: Update Pulumi/Pulumi