[commit: testsuite] wip/nested-cpr's head updated: Test output update: Nested CPR signatures (63ae604)

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Repository : ssh://git@git.haskell.org/testsuite

Branch 'wip/nested-cpr' now includes:

     20d7273 Update output: More elaborate GND error messages
     69f6072 Add new ghc-e/should_fail test suite
     0d939eb Different quotes in error messages following lexer clean-up
     3e66489 Test Trac #8577
     27c42f4 More different quotes in error messages following lexer clean-up
     7e5c115 Add testcase for #8598
     323cab2 Use -ddump-strsigs in tests/stranal/sigs
     def26d4 Mark testcase for #8598 as not broken
     9f4c591 Add nested CPR testcase
     8c5f13e Demand Analyser testcase: Unsaturated functions
     1cfa8d6 Update outputs per “Improve the handling of used-once stuff”
     63ae604 Test output update: Nested CPR signatures