chore(deps): update Native SDK to v0.7.20

[github-actions]

Bumps flutter/scripts/update-native.sh from 0.7.17 to 0.7.20.

Auto-generated by a dependency updater.

Changelog

0.7.20

Features:

• Auto-detect the latest GDK and Windows SDK for the Xbox build. (#1124)
• Enable debug-option by default when running in a debug-build. (#1128)

Fixes:

• Allow older toolchains with assemblers that don't support PAC-stripping instructions on aarch64 to compile crashpad. (#1125, crashpad#118)
• Set default max_spans to 1000. (#1132)

0.7.19

Fixes:

• Fix a build error on older compilers introduced by C++17 support in 0.7.18 for the crashpad backend. (#1118, crashpad#117, mini_chromium#2)

0.7.18

Features:

• Add support for Xbox Series X/S. (#1100)
• Add option to set debug log level. (#1107)
• Add traces_sampler. (#1108)
• Provide support for C++17 compilers when using the crashpad backend. (#1110, crashpad#116, mini_chromium#1)