Update libloading requirement from 0.7.3 to 0.8.0

[dependabot[bot]]

Updates the requirements on libloading to permit the latest version.

Commits

• 83b1037 Release 0.8.0
• a6a394a bump MSRV to 1.48
• c7955a7 Replace winapi with windows-sys
• 95d03a1 Add support for QNX Neutrino
• 6e28498 Fix CI
• 95a0f62 Placate clippy
• 224a3de Release 0.7.4
• bd17713 Support AIX dyld constants
• 6e07929 fix typo
• 6b33651 Construct a PathBuf
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)