test: Fix Terraform Docker container (#7873)

Terraform Docker container was trying to use python3.9 on AL2,
which doesn't exist. Migrate to AL2023, which already has
python3.9 installed (so we don't even need to install it)

Author: valerena

tests/integration/testdata/buildcmd/terraform/build_image_docker/Dockerfile

@@ -1,9 +1,7 @@
-FROM public.ecr.aws/amazonlinux/amazonlinux:2
+FROM public.ecr.aws/amazonlinux/amazonlinux:2023
 
 RUN yum -y update \
-    && yum install -y unzip tar gzip bzip2-devel ed gcc gcc-c++ gcc-gfortran \
-    less libcurl-devel openssl openssl-devel readline-devel xz-devel \
-    zlib-devel glibc-static libcxx libcxx-devel llvm-toolset-7 zlib-static \
+    && yum install -y unzip tar gzip ed less \
     && rm -rf /var/cache/yum
 
 RUN yum -y install make \
@@ -15,11 +13,9 @@ RUN yum install -y yum-utils \
     && terraform --version
 
 # AWS Lambda Builders
-RUN amazon-linux-extras enable python3.9
-RUN yum clean metadata && yum -y install python3.9
+# AL2023 uses Python3.9 by default. This might fail in the future if that changes. We just need the proper version
 RUN curl -L get-pip.io | python3.9
 RUN pip3 install aws-lambda-builders
-RUN ln -s /usr/bin/python3.9 /usr/bin/python3
 RUN python3 --version
 
 VOLUME /project