Update GitHub Actions workflows. (#730)

This PR was automatically generated by the
update-workflows-ecosystem-providers workflow in the pulumi/ci-mgmt
repo, from commit 4cdb4b8cad405d730db594e8adb73ee1b875b4a6.

Co-authored-by: Pulumi Bot <bot@pulumi.com>

.config/mise.toml

@@ -2,7 +2,7 @@
 # You can create your own root-level mise.toml file to override/augment this. See https://mise.jdx.dev/configuration.html
 
 [env]
-_.source = "{{config_root}}/scripts/get-versions.sh"
+_.vfox-pulumi = { module_path = "." } # Sets GO_VERSION_MISE and PULUMI_VERSION_MISE
 PULUMI_HOME = "{{config_root}}/.pulumi"
 
 [tools]

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

@@ -14,13 +14,14 @@ runs:
   using: "composite"
   steps:
     - name: Setup mise
-      uses: jdx/mise-action@146a28175021df8ca24f8ee1828cc2a60f980bd5 # v3
+      uses: blampe/mise-action@blampe/plugins
       env:
         MISE_FETCH_REMOTE_VERSIONS_TIMEOUT: 30s
       with:
         version: 2025.11.6
         cache_save: ${{ inputs.cache }}
         github_token: ${{ inputs.github_token }}
+        plugin_install: https://github.com/pulumi/vfox-pulumi
 
     - name: Setup Go Cache
       uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0