Merge branch 'ci/amd64-build-tags' into 'develop'

CI: Tag amd64 releases for amd64 runners

See merge request pleroma/pleroma!3799

.gitlab-ci.yml

@@ -260,6 +260,8 @@ amd64:
   - develop@pleroma/pleroma
   - /^maint/.*$/@pleroma/pleroma
   - /^release/.*$/@pleroma/pleroma
+  tags:
+    - amd64
   artifacts: &release-artifacts
     name: "pleroma-$CI_COMMIT_REF_NAME-$CI_COMMIT_SHORT_SHA-$CI_JOB_NAME"
     paths:
@@ -292,6 +294,8 @@ amd64-musl:
   stage: release
   artifacts: *release-artifacts
   only: *release-only
+  tags:
+    - amd64
   image: elixir:1.10.4-alpine
   cache: *release-cache
   variables: *release-variables