This update for fwts fixes the following issues:

Update to version 21.05.00:

* lib: fwts_version.h - update to V21.05.00
* debian: update changelog
* auto-packager:mkpackage.sh: add impish
* fwts-test: sync up with dbgp changes
* acpi: dbgp/spmi: check space ids by fwts_acpi_space_id
* acpiinfo: update ACPI 6.4 vs. ACPICA versions
* lib: acpi: fix incorrect actual vs. struct length outputs
* acpi: shorten helper function names by removing "check"
* lib: acpi: unify naming style by removing "ACPI"
* fwts-test: sync up with PMTT refactoring changes
* acpi: refactor length check by fwts_acpi_structure_length_check
* acpi: refactor zero length by fwts_acpi_structure_length_zero_check

Update to version 21.03.00:

* uefirtvariable: fix memory leak
* acpi: refactor by fwts_acpi_reserved_type_check
* acpi: refactor by fwts_acpi_structure_range_check
* uefirtauthvar: check variable runtime services supported before testing (LP: #1913351)
* uefirtvariable: check variable runtime services supported before testing (LP: #1913351)
* uefirtmisc: check misc runtime services supported before testing (LP: #1913351)
* uefirttime: check time services supported before testing (LP: #1913351)
* acpi: spcr: accept baud rate 0x0 as a preconfigured state
* fwts-test: sync up with PMTT rev 2 changes
* acpi: pmtt: update PMTT to revision 2 (mantis 1975)