v1.15.0

LabelledArrays v1.15.0

Diff since v1.14.0

Merged pull requests:

• enable dependabot for GitHub actions (#142) (@ranocha)
• Bump codecov/codecov-action from 1 to 3 (#143) (@dependabot[bot])
• Bump actions/cache from 1 to 3 (#144) (@dependabot[bot])
• Bump actions/checkout from 1 to 3 (#145) (@dependabot[bot])
• Correct typo (#146) (@eschnett)
• Bump actions/checkout from 3 to 4 (#147) (@dependabot[bot])
• Documenter 1.0 upgrade (#148) (@ArnoStrouwen)
• chore: update RecursiveArrayTools compat (#149) (@AayushSabharwal)