bump: Update case-app to 2.1.0-M26

[lolgab]

This updates case-app to its current latest version.

[codacy-production[bot]]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
:white_check_mark: +1.21% (target: -1.00%)	:white_check_mark: ∅

Coverage variation details

| | Coverable lines | Covered lines | Coverage | | ------------- | ------------- | ------------- | ------------- | | Common ancestor commit (161c45f7dfd96c673ee336aa02db4e751bc1e13e) | 741 | 561 | 75.71% | | | Head commit (d435dd4a29edccef0fd49457b87e34090db2c49f) | 429 (-312) | 330 (-231) | 76.92% (**+1.21%**) | **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 (#494) | 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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