Bump lru from 0.6.6 to 0.7.1 in /dns-cache#2

dependabot[bot] wants to merge 1 commit intomasterAS207960/hexdns:masterfrom

dependabot/cargo/dns-cache/lru-0.7.1AS207960/hexdns:dependabot/cargo/dns-cache/lru-0.7.1Copy head branch name to clipboard