refactor: make all json outputs compressable (false by default).

[autonomousapps]

A follow-up will flip the default to compressed by default.

[github-actions]

Job Summary for Gradle

Test :: gradle

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
build-logic	buildHealth	9.6.0	✅
build-logic	check	9.6.0	✅
dependency-analysis-gradle-pl…	buildHealth	9.6.0	✅
testkit	buildHealth	9.6.0	✅
dependency-analysis-gradle-pl…	check	9.6.0	❌

[github-actions]

Job Summary for Gradle

Test :: gradle

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
build-logic	buildHealth	9.6.0	✅
build-logic	check	9.6.0	✅
dependency-analysis-gradle-pl…	buildHealth	9.6.0	✅
testkit	buildHealth	9.6.0	✅
dependency-analysis-gradle-pl…	check	9.6.0	❌

[github-actions]

Job Summary for Gradle

Test :: gradle

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
build-logic	buildHealth	9.6.0	✅
build-logic	check	9.6.0	✅
dependency-analysis-gradle-pl…	buildHealth	9.6.0	✅
testkit	buildHealth	9.6.0	✅
dependency-analysis-gradle-pl…	check	9.6.0	✅
testkit	check	9.6.0	✅
dependency-analysis-gradle-pl…	:functionalTest	9.6.0	❌

[github-actions]

Job Summary for Gradle

Test :: gradle

Gradle Root Project	Requested Tasks	Gradle Version	Build Outcome	Build Scan®
build-logic	buildHealth	9.6.0	✅
build-logic	check	9.6.0	✅
dependency-analysis-gradle-pl…	buildHealth	9.6.0	✅
testkit	buildHealth	9.6.0	✅
dependency-analysis-gradle-pl…	check	9.6.0	✅
testkit	check	9.6.0	✅
dependency-analysis-gradle-pl…	:functionalTest	9.6.0	❌

[autonomousapps]

Need to revisit this later. Having the file extensions change to be json or json.gz depending on whether they're compressed (and making compression configurable) is a much bigger change than I anticipated.