Bump references to Develocity Gradle plugin from 3.19.2 to 4.0 (#596)

This PR bumps references to Develocity Gradle plugin from 3.19.2 to 4.0.

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Co-authored-by: daz <daz@gradle.com>

.github/workflows/integ-test-build-scan-publish.yml

@@ -25,7 +25,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        gradle: [current, 7.6.2, 6.9.4, 5.6.4]
+        gradle: ['current', '7.6.2', '6.9.4', '5.6.4']
         os: ${{fromJSON(inputs.runner-os)}}
     runs-on: ${{ matrix.os }}
     steps:
@@ -41,8 +41,8 @@ jobs:
         cache-read-only: false # For testing, allow writing cache entries on non-default branches
         gradle-version: ${{ matrix.gradle }}
         build-scan-publish: true
-        build-scan-terms-of-use-url: "https://gradle.com/terms-of-service"
-        build-scan-terms-of-use-agree: "yes"
+        build-scan-terms-of-use-url: 'https://gradle.com/terms-of-service'
+        build-scan-terms-of-use-agree: 'yes'
     - name: Run Gradle build
       id: gradle
       working-directory: .github/workflow-samples/no-ge