Remove automatic publishing of builds data (#10170)

To be more privacy-friendly by default, this PR removes the automatic publishing of build data to Gradle servers. The report is still published automatically when the build is run in a CI environment.

If developers want to publish build scans, they can use the `--scan` option:

```sh
./gradlew clean build --scan
````

or set the `publishing.onlyIf` parameter to `true` to always publish the report like this:

```
develocity {
    buildScan {
        publishing.onlyIf { true }
        termsOfUseUrl = "https://gradle.com/terms-of-service"
        termsOfUseAgree = "yes
        tag("CI")
    }
}
```

In this case, developers can use `--no-scan` to avoid selectively publishing the report:

```sh
./gradlew clean build --no-scan
````

---------

Signed-off-by: Giuseppe Bertone <[email protected]>
Co-authored-by: Steven Sheehy <[email protected]>

settings.gradle.kts

@@ -56,6 +56,7 @@ fun shortenProjectName(project: ProjectDescriptor) {
 
 develocity {
     buildScan {
+        publishing.onlyIf { System.getenv().containsKey("CI") }
         termsOfUseUrl = "https://gradle.com/terms-of-service"
         termsOfUseAgree = "yes"
         tag("CI")