Install terraform for github actions that need it

The image in use for our ci actions, ubuntu-latest is now defaulting to
ubuntu-24.04.  In the previous version, terraform was installed by
default but has now been removed so we install it manually for each job
that relies on it.

actions/runner-images#10636

.github/workflows/acceptance-tests.yml

@@ -14,6 +14,11 @@ jobs:
           go-version-file: 'go.mod'
           cache: true
 
+      - name: Install terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.9.5
+
       - name: Tests
         run: make testacc
         env:

.github/workflows/ci.yaml

@@ -46,6 +46,11 @@ jobs:
         with:
           go-version: 1.22
 
+      - name: Install terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.9.5
+
       - name: Tests
         run: make test
 
@@ -72,6 +77,12 @@ jobs:
       - name: Checkout sources
         uses: actions/checkout@v4
 
+      # Terraform fmt is run on the docs directory
+      - name: Install terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.9.5
+
       - name: Build docs
         run: make generate
 

.github/workflows/pre-release-ci.yaml

@@ -19,6 +19,11 @@ jobs:
         with:
           go-version: 1.22
 
+      - name: Install terraform
+        uses: hashicorp/setup-terraform@v3
+        with:
+          terraform_version: 1.9.5
+
       - name: Tests
         run: make testacc
         env: