Release 0.21.2

[eddelbuettel]

This PR updates the package to release 0.21.2. From NEWS.md (with 'lowered' headline levels for display here):

tiledb 0.21.2

• This release of the R package builds against TileDB 2.17.4, and has also been tested against earlier releases as well as the development version (Use TileDB 2.17.4 #611)

Improvements

• Set conditions are supported in query condition expressions (Support 'IN' and 'NOT_IN' set operations for query conditions #597)

• Query conditions expression parsing via parse_query_conditions was extended simmilarly (Extend parse_query_condition to use new 'IN' and 'NOT_IN' queries #598)

• Array fragment deletions uses a new static method (with TileDB 2.18.0 or later) (Accomodate deprecation of delete_fragments in 2.18.0 #599)

• The included nanoarrow header and source file have been updated to release 0.3.0 (Update (vendored) nanoarrow to new release 0.3.0 #600)

• Query conditions expression parsing requirements are stated and tested more clearly (Emit clearer error when array is needed for parse, update docs #601)

• Use of TileDB Embedded was upgraded to release 2.17.2 (Use TileDB 2.17.2 #602)

• Enumeration (aka 'factor') support has been extended for 'empty' creation and subsequent extension with new levelss (Refine enumeration support #605)

• Use of TileDB Embedded was upgraded to release 2.17.3 (Use TileDB 2.17.3 #606)

• Factor variables with (unlikely) int64 indices are supported ([r] Deal with int64 corner case #607)

• R objects can be (de-)serialized to and from VFS paths (Add VFS (de-)serialization support #608)

• Enumeration support has been extended to some cases only supported by Arrow (Extend enumeration support to non-string levels #609)

• Use of TileDB Embedded was upgraded to release 2.17.4 (Use TileDB 2.17.4 #611)

Bug Fixes

• The DESCRIPTION file now correctly refers to macOS 10.14 (Minor cosmetic edits in DESCRIPTION and configure.ac #596)

• The (explicitly) 'batched reader now ensure a correct layout for sparse arrays (Ensure sparse arrays are read UNORDERED if no default was set #610)

Build and Test Systems

• The nighly valgrind run was updated to include release 2.17 (Update to release-2.17, add new dependencies, add dispatch #603)

[shortcut-integration]

This pull request has been linked to Shortcut Story #36478: Release 0.21.2.