vuln-fix: Use HTTPS instead of HTTP to resolve dependencies

This fixes a security vulnerability in this project where the `build.gradle`
files were configuring Gradle to resolve dependencies over HTTP instead of
HTTPS.

Weakness: CWE-829: Inclusion of Functionality from Untrusted Control Sphere
Severity: High
CVSSS: 8.1
Detection: OpenRewrite

Reported-by: Jonathan Leitschuh <[email protected]>
Signed-off-by: Jonathan Leitschuh <[email protected]>

Bug-tracker: JLLeitschuh/security-research#9

Co-authored-by: Moderne <[email protected]>

build.gradle

@@ -3,7 +3,7 @@ buildscript {
         jcenter()
         mavenLocal()
         maven {
-            url 'http://repo.jenkins-ci.org/releases/'
+            url 'https://repo.jenkins-ci.org/releases/'
         }
         maven {
             url 'https://plugins.gradle.org/m2/'
@@ -132,4 +132,4 @@ pluginBundle {
 
 test {
     ignoreFailures = true
-}
+}