v0.5.11

Quadmath v0.5.11

Diff since v0.5.10

Merged pull requests:

• Fix bigfloat conversion for Julia v1.12 (#75) (@RalphAS)
• switch CI action to julia-cache (#76) (@RalphAS)
• Bump julia-actions/cache from 1 to 2 (#77) (@dependabot[bot])
• Bump codecov/codecov-action from 4 to 5 (#78) (@dependabot[bot])
• release 0.5.11 (#79) (@KristofferC)