- add build require pkgconfig(zstd) to fix build for Leap 15.4

- update to 4.9.2:
* Update `nc-config` to remove inclusion from
automatically-detected `nf-config` and `ncxx-config` files,
as the wrong files could be included in the output.
* Update H5FDhttp.[ch] to work with HDF5 version 1.13.2
and later.
* [Bug Fix] Update DAP code to enable CURLOPT_ACCEPT_ENCODING
by default.
* [Bug Fix] Fix byterange failures for certain URLs.
* [Bug Fix] Fix 'make distcheck' error in run_interop.sh.
* [Enhancement] Update `nc-config` to remove inclusion from
automatically-detected `nf-config` and `ncxx-config` files,
as the wrong files could be included in the output.
* [Enhancement] Update H5FDhttp.[ch] to work with HDF5
version 1.14.0.
* Fix nc_def_var_fletcher32 operation
* Merge relevant info updates back into `main`
* Add manual GitHub actions triggers for the tests.
* Make public a limited API for programmatic access to internal
.rc tables
* Fix typo in CMakeLists.txt
* Fix choice of HOME dir
* Check for libxml2 development files
* Updating Doxyfile.in with doxygen-1.8.17, turned on
WARN_AS_ERROR, added doxygen build to CI run
* updated release notes
* increase read block size from 1 KB to 4 MB
* fixed RELEASE_NOTES.md