Lock terraform version to v1.12.0 for Java EKS OTLP/OCB canary (#408)

*Issue description:*
The latest version v1.12.1 of terraform has regression problem. Pin to
the previous working version v1.12.0 as mitigation.

*Description of changes:*

*Rollback procedure:*

<Can we safely revert this commit if needed? If not, detail what must be
done to safely revert and why it is needed.>

*Ensure you've run the following tests on your changes and include the
link below:*

To do so, create a `test.yml` file with `name: Test` and workflow
description to test your changes, then remove the file for your PR. Link
your test run in your PR description. This process is a short term
solution while we work on creating a staging environment for testing.

NOTE: TESTS RUNNING ON A SINGLE EKS CLUSTER CANNOT BE RUN IN PARALLEL.
See the
[needs](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idneeds)
keyword to run tests in succession.
- Run Java EKS on `e2e-playground` in us-east-1 and eu-central-2
- Run Python EKS on `e2e-playground` in us-east-1 and eu-central-2
- Run metric limiter on EKS cluster `e2e-playground` in us-east-1 and
eu-central-2
- Run EC2 tests in all regions
- Run K8s on a separate K8s cluster (check IAD test account for master
node endpoints; these will change as we create and destroy clusters for
OS patching)

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 license.

Author: vastin

.github/workflows/java-eks-otlp-ocb-test.yml

@@ -175,7 +175,7 @@ jobs:
         with:
           command: "wget -O- https://apt.releases.hashicorp.com/gpg | sudo gpg --dearmor -o /usr/share/keyrings/hashicorp-archive-keyring.gpg"
           post-command: 'echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] https://apt.releases.hashicorp.com $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/hashicorp.list
-              && sudo apt update && sudo apt install terraform'
+              && sudo apt update && sudo apt install terraform=1.12.0-1'
           sleep_time: 60
 
       - name: Initiate Terraform
@@ -388,4 +388,4 @@ jobs:
             --name appsignals-collector \
             --namespace ${{ env.SAMPLE_APP_NAMESPACE }} \
             --cluster ${{ env.CLUSTER_NAME }} \
-            --region ${{ env.E2E_TEST_AWS_REGION }}
+            --region ${{ env.E2E_TEST_AWS_REGION }}