HDF5 test configuration with Cygwin fails 7 tests

[lrknox]

These 7 tests failed 11/4/2024
H5IMPORT-STR-H5DMP_CMP,0.16, (Failed)
H5REPACK-deflate_file,0.11, (Failed)
H5TESTXPR-cache_api,0.1, (Failed)
H5TEST-accum,0.27, (Failed)
H5TEST-dtypes,0.88, (Failed)
H5REPACK-deflate_file_DFF,0.05, (Failed)
H5TEST-err_compat,0.13, (Failed)

Error messages for the H5TEST-dtypes test:
Testing complex number datatype conversions FAILED
Conversion path for H5T_NATIVE_FLOAT_COMPLEX -> H5T_NATIVE_FLOAT_COMPLEX was not a no-op
Testing complex number datatype <-> array datatype compatibility conversionsFAILED
Conversion path for complex type -> array type was not a no-op
Testing complex number datatype <-> compound datatype compatibility conversionsFAILED
Conversion path for complex type -> compound type was not a no-op

The other 6 failed for various other reasons that may not be related to the H5TEST-dtypes test failure.

Platform (please complete the following information)

• HDF5 version : develop commit 35df4fb
• CYGWIN_NT-10.0-20348-3.5.4-1.x86_64-x86_64
• Compiler and version: GNU 12.4.0
• Build system: CMake
• Any configure options you specified: -DCMAKE_BUILD_TYPE:STRING=Release --log-level=VERBOSE -DHDF5_GENERATE_HEADERS=OFF -DHDF5_BUILD_JAVA:BOOL=OFF -DHDF5_BUILD_CPP_LIB:BOOL=OFF -DHDF5_BUILD_FORTRAN:BOOL=OFF -DHDF5_ENABLE_Z_LIB_SUPPORT:BOOL=ON -DHDF5_ENABLE_SZIP_SUPPORT:BOOL=ON -DHDF5_ENABLE_SZIP_ENCODING:BOOL=ON -DHDF5_ENABLE_PLUGIN_SUPPORT:BOOL=ON