Bump com.google.cloud.tools:jib-gradle-plugin from 3.3.2 to 3.4.0

Bumps com.google.cloud.tools:jib-gradle-plugin from 3.3.2 to 3.4.0.

---
updated-dependencies:
- dependency-name: com.google.cloud.tools:jib-gradle-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

buildSrc/build.gradle.kts

@@ -8,5 +8,5 @@ repositories {
 }
 
 dependencies {
-  implementation("com.google.cloud.tools:jib-gradle-plugin:3.3.2")
+  implementation("com.google.cloud.tools:jib-gradle-plugin:3.4.0")
 }