ci: added quotes around changelog input

Signed-off-by: Jackson Greer <[email protected]>

Makefile

@@ -31,7 +31,7 @@ prepare-buildx: ## Create buildx builder for multi-arch build, if not exists
 	docker buildx inspect $(BUILDER) || docker buildx create --name=$(BUILDER) --driver=docker-container --driver-opt=network=host
 
 push-extension: prepare-buildx ## Build & Upload extension image to hub. Do not push if tag already exists: make push-extension tag=0.1
-	docker pull $(IMAGE):$(TAG) && echo "Failure: Tag already exists" || docker buildx build --push --builder=$(BUILDER) --platform=linux/amd64,linux/arm64 --build-arg TAG=$(TAG) --build-arg CHANGELOG=$(changelog_text) --tag=$(IMAGE):$(TAG) .
+	docker pull $(IMAGE):$(TAG) && echo "Failure: Tag already exists" || docker buildx build --push --builder=$(BUILDER) --platform=linux/amd64,linux/arm64 --build-arg TAG=$(TAG) --build-arg CHANGELOG="$(changelog_text)" --tag=$(IMAGE):$(TAG) .
 
 build-copa-image: prepare-buildx
 	docker buildx build --platform linux/amd64,linux/arm64 --build-arg copa_version=$(version) -t copa-extension container/copa-extension