Set GOTOOLCHAIN to auto in Verify Release Workflows (#1853)

This pull request is a hotfix for
pulumi/pulumi-tls#888.

In all other workflows, we allow for Mise to install the Go version but
we decided to keep the legacy implementation where we allow for the
setup-go job to install the version instead.
Setup-go shipped a change actions/setup-go#460
where the gotoolchain is now installed using `local` not `auto` and this
keeps the verify-release workflow from installing a Go version other
than the one set in the tool version.

Update: It turns out that v1.22.x is not enough:
https://github.com/pulumi/pulumi-gcp/actions/runs/19448883749/job/55655199413#step:17:54

> Error: exec: go: go.mod requires go >= 1.23.3 (running go 1.21.13;
GOTOOLCHAIN=local)

so rather than bumping the Go version, this pull request sets the go
toolchain to `auto` so the workflow downloads it as before.

Author: guineveresaenger

provider-ci/internal/pkg/templates/base/.github/workflows/verify-release.yml

@@ -126,6 +126,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       #{{- end }}#
       #{{- end }}#
       - name: Install Pulumi CLI

provider-ci/test-providers/acme/.github/workflows/verify-release.yml

@@ -100,6 +100,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/aws/.github/workflows/verify-release.yml

@@ -104,6 +104,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/cloudflare/.github/workflows/verify-release.yml

@@ -108,6 +108,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/docker/.github/workflows/verify-release.yml

@@ -120,6 +120,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/eks/.github/workflows/verify-release.yml

@@ -111,6 +111,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/terraform-module/.github/workflows/verify-release.yml

@@ -118,6 +118,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with:

provider-ci/test-providers/xyz/.github/workflows/verify-release.yml

@@ -104,6 +104,9 @@ jobs:
             sdk/*.sum
             *.sum
           cache: true
+      - name: Set Go Toolchain to auto explicitly
+        run: |
+          echo "GOTOOLCHAIN=auto" >> "$GITHUB_ENV"
       - name: Install Pulumi CLI
         uses: pulumi/actions@d7ceb0215da5a14ec84f50b703365ddf0194a9c8 # v6
         with: