ci: fix upload-postgres-extensions-to-s3 job

commit

	commit 5f8fd64
	Author: Alek Westover <alek.westover@gmail.com>
	Date:   Wed Jul 26 08:24:03 2023 -0400

	    Upload Test Remote Extensions (#4792)

switched to using the release tag instead of `latest`, but,
the `promote-images` job only uploads `latest` to the prod ECR.

The switch to using release tag was good in principle, but,
reverting that part to make the release pipeine work.

Note that a proper fix should abandon use of `:latest` tag
at all: currently, if a `main` pipeline runs concurrently
with a `release` pipeline, the `release` pipeline may end
up using the `main` pipeline's images.

.github/workflows/build_and_test.yml

@@ -955,7 +955,7 @@ jobs:
         version: [ v14, v15 ]
 
     env:
-      EXTENSIONS_IMAGE: ${{ github.ref_name == 'release' && '093970136003' || '369495373322'}}.dkr.ecr.eu-central-1.amazonaws.com/extensions-${{ matrix.version }}:${{ needs.tag.outputs.build-tag }}
+      EXTENSIONS_IMAGE: ${{ github.ref_name == 'release' && '093970136003' || '369495373322'}}.dkr.ecr.eu-central-1.amazonaws.com/extensions-${{ matrix.version }}:latest
       AWS_ACCESS_KEY_ID: ${{ github.ref_name == 'release' && secrets.AWS_ACCESS_KEY_PROD || secrets.AWS_ACCESS_KEY_DEV }}
       AWS_SECRET_ACCESS_KEY: ${{ github.ref_name == 'release' && secrets.AWS_SECRET_KEY_PROD || secrets.AWS_SECRET_KEY_DEV }}
       S3_BUCKETS: ${{ github.ref_name == 'release' && vars.S3_EXTENSIONS_BUCKETS_PROD || vars.S3_EXTENSIONS_BUCKETS_DEV }}