ci: QEMUv8_check: enable attestation PTA

Enables the attestation PTA for all configurations in the QEMU_v8 job.
This would have caught the issue fixed by the parent commit.

Signed-off-by: Jerome Forissier <jerome.forissier@linaro.org>
Acked-by: Jens Wiklander <jens.wiklander@linaro.org>

.github/workflows/ci.yml

@@ -272,6 +272,8 @@ jobs:
           export LC_ALL=C
           export BR2_CCACHE_DIR=/github/home/.cache/ccache
           export CFG_TEE_CORE_LOG_LEVEL=0
+          export CFG_ATTESTATION_PTA=y
+          export CFG_ATTESTATION_PTA_KEY_SIZE=1024
           WD=$(pwd)
           cd ..
           TOP=$(pwd)/optee_repo_qemu_v8