Raise thread limits for bigger runners

.gitlab-ci.yml

@@ -84,7 +84,7 @@ local-build-test-job:
     - curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.3/install.sh | bash
     - export NVM_DIR="$HOME/.nvm" && . "$NVM_DIR/nvm.sh"
   script:
-    - THREADS=4
+    - THREADS=8
     - nvm version
     - python3 ./configure.py
     - source ./source_me.sh
@@ -120,7 +120,7 @@ build-job:
     - CACHE_TAG="cache-$(echo ${CI_COMMIT_BRANCH}${CI_COMMIT_TAG} | tr '/' '-')"
     - MAINLINE_CACHE_TAG="cache-master"
     - PLATFORMS=linux/amd64
-    - THREADS=4
+    - THREADS=8
     - DOCKER_TAG=ci-${CI_PIPELINE_IID}-${CI_COMMIT_SHA}
     - make include/vg_git_version.hpp
     - cat include/vg_git_version.hpp
@@ -162,7 +162,7 @@ production-build-job:
     - CACHE_TAG="cache-$(echo ${CI_COMMIT_BRANCH}${CI_COMMIT_TAG} | tr '/' '-')"
     - MAINLINE_CACHE_TAG="cache-master"
     - PLATFORMS=linux/amd64,linux/arm64
-    - THREADS=2 # Since we run two builds at once, each gets fewer threads
+    - THREADS=8 # Oversubscribe since the ARM build will take way longer anyway.
     # Determine what we should be tagging vg Dockers as. If we're running on a Git tag we want to use that. Otherwise push over the tag we made already.
     - if [[ ! -z "${CI_COMMIT_TAG}" ]]; then DOCKER_TAG="${CI_COMMIT_TAG}" ; else DOCKER_TAG="ci-${CI_PIPELINE_IID}-${CI_COMMIT_SHA}"; fi
     - make include/vg_git_version.hpp