DEV: Re-enable minio specs by pre-installing minio binary before test run (#24050)

This fixes a similar issue to 8b3eca0 where an Errno::ETXTBSY error was raised because the minio_runner gem was trying to install the binary across multiple processes in rspec. If we just make sure the latest version is installed before the tests run, this shouldn't happen, since MinioRunner.start will not do any further attempts at installation if the latest version is installed.

spec/system/s3_secure_uploads_spec.rb

@@ -110,7 +110,13 @@ describe "Uploading files in the composer to S3", type: :system do
 
       # Extra wait time is added because the job can slow down the processing of the request.
       img = first_post_img(wait: 10)
-      expect(img["src"]).not_to include("/secure-uploads")
+
+      # At first the image will be secure when created via the composer, usually the
+      # CookedPostProcessor job fixes this but running it immediately when creating the
+      # post doesn't work in the test, so we need to rebake here to get the correct result.
+      expect(page).to have_css("img[src*='secure-uploads']")
+      Post.last.rebake!
+      expect(page).not_to have_css("img[src*='secure-uploads']", wait: 5)
       topic = topic_page.current_topic
       expect(topic.first_post.uploads.first.secure).to eq(false)
     end

spec/system/s3_uploads_spec.rb

@@ -22,7 +22,7 @@ describe "Uploading files in the composer to S3", type: :system do
         attach_file(File.absolute_path(file_from_fixtures("logo.jpg"))) do
           find("#avatar-uploader").click
         end
-        expect(page).to have_css(".avatar-uploader label[data-uploaded]")
+        expect(page).to have_css(".avatar-uploader .avatar-uploader__button[data-uploaded]")
         modal.click_primary_button
         expect(modal).to be_closed
         expect(page).to have_css(