fix: Detect sentry-cli version for relative endpoint use in ChunkUploadEndpoint

[kamilogorek]

Prior to sentry-cli 1.70.1 we issued a warning about usage of relative URLs for chunked uploads. Because we changed it in the Sentry itself, it was issued for every user of sentry-cli, that do not override their on-premise system.upload-url-prefix config. We did remove this warning in 1.70.1, and it's only the log message, however, we do count it as a regression and would rather patch it here as well.

Note: There is no generic semver parser available in our codebase, and there is no need to pull additional package to do this here.

ref: getsentry/sentry-cli#1054 (review)
ref: #29347

[flub]

nit: to me this looks more pythonic as (v.group('major'), v.group('minor'), v.group('patch')) >= (1, 70, 1), but i think it's functionally equivalent so doesn't really matter

[kamilogorek]

It ends up being formatted as

supports_relative_url = (sentrycli_version is not None) and (
    (
        int(sentrycli_version.group("major")),
        int(sentrycli_version.group("minor")),
        int(sentrycli_version.group("patch")),
    )
    >= (1, 70, 1)
)

which is kinda ugly. Even with shorter name its still "meh", especially that we need to cast it.