Don't cache 4xx/5xx errors permanently for files from stable releases#4

0t4u wants to merge 3 commits intohexops:mainhexops/wrench:mainfrom

0t4u:0t4u/fix/zig-mirror-no-cache-error-for-stable0t4u/wrench:0t4u/fix/zig-mirror-no-cache-error-for-stableCopy head branch name to clipboard