ci: Use id_tokens for JWT auth

Fixes: #9180

Signed-off-by: Guilherme Gallo <guilherme.gallo@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28916>

.gitlab-ci/common/generate-env.sh

@@ -10,7 +10,7 @@ VARS=(
     CI_COMMIT_REF_NAME
     CI_COMMIT_TITLE
     CI_JOB_ID
-    CI_JOB_JWT_FILE
+    S3_JWT_FILE
     CI_JOB_STARTED_AT
     CI_JOB_NAME
     CI_JOB_URL

.gitlab-ci/common/init-stage2.sh

@@ -217,7 +217,7 @@ cleanup
 # upload artifacts
 if [ -n "$S3_RESULTS_UPLOAD" ]; then
   tar --zstd -cf results.tar.zst results/;
-  ci-fairy s3cp --token-file "${CI_JOB_JWT_FILE}" results.tar.zst https://"$S3_RESULTS_UPLOAD"/results.tar.zst;
+  ci-fairy s3cp --token-file "${S3_JWT_FILE}" results.tar.zst https://"$S3_RESULTS_UPLOAD"/results.tar.zst;
 fi
 
 # We still need to echo the hwci: mesa message, as some scripts rely on it, such