Update dependency com.google.cloud.tools:jib-maven-plugin to v3.4.3 #349

All 144 177 tests pass in 2m 3s

144 177 tests ±0 144 177 ✔️ ±0 2m 3s ⏱️ +6s
        24 suites ±0           0 💤 ±0
        24 files ±0           0 ❌ ±0

Results for commit 3be3477. ± Comparison against earlier commit f55c3aa.