Downgrade JS dependency to version >=0.6.7 <0.8.0

[mugikhan]

Description

There is a build error in FlutterFlow as some of packages used by default rely on js: 0.6.7. We only use the JS dependency for web tests and the package downgrade does not break those tests.

Error Getting Packages
Check the following custom dependencies: powersync: ^1.6.2.
Because sign _in_with_apple_web <2.0.0-dev.1 depends on js ^0.6.3 
and powersync>=1.6.0-alpha.1 depends on js ^0.7.0, 
sign in with_apple _web <2.0.0-dev.1 is incompatible with powersync >=1.6.0-alpha.1.

Work done

• Downgrade JS dependency to version 0.6.7