Add suport for Ruby 3.2 and remove Rails 5.*

[adamcrown]

• Ruby 3.2 is out now, so add support for it
• Also, remove support for Rail 5.* as it is getting pretty old
• Test all suported Ruby versions

[codacy-production[bot]]

Coverage summary from Codacy

Merging #80 (a899688e55acb3241aaeaa531f13bcb216863470) into main (4fbd4f1c74d49776cad69b320988d7a38c1bccfd) - See PR on Codacy

Coverage variation	Diff coverage
:white_check_mark: +0.00% (target: -1.00%)	∅

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (4fbd4f1c74d49776cad69b320988d7a38c1bccfd) | 1100 | 1100 | 100.00% | | | Head commit (a899688e55acb3241aaeaa531f13bcb216863470) | 1100 (+0) | 1100 (+0) | 100.00% (**+0.00%**) | **Coverage variation** is the difference between the coverage for the head and common ancestor commits of the pull request branch: ` - `

Diff coverage details

| | Coverable lines | Covered lines | Diff coverage | | ------------- | ------------- | ------------- | ------------- | | Pull request (#80) | 0 | 0 | **∅ (not applicable)** | **Diff coverage** is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: `/ * 100%`

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