perf: upgrade to deno_semver 0.7

[dsherret]

% hyperfine --warmup 5 "./deno_old install" "./deno_new install"
Benchmark 1: ./deno_old install
  Time (mean ± σ):     552.3 ms ±   4.8 ms    [User: 530.2 ms, System: 37.0 ms]
  Range (min … max):   547.7 ms … 562.2 ms    10 runs
 
Benchmark 2: ./deno_new install
  Time (mean ± σ):     523.2 ms ±   5.1 ms    [User: 502.1 ms, System: 33.9 ms]
  Range (min … max):   516.7 ms … 534.9 ms    10 runs
 
Summary
  ./deno_new install ran
    1.06 ± 0.01 times faster than ./deno_old install

Most of our time is spent deserializing packuments.

[bartlomieju]

LGTM, I don't think we expect any changes in the benchmark page after this one lands?

[dsherret]

Probably not. I don't think the benchmark page does any npm resolution. I'll add a benchmark to this PR description in a second.