update .gitignore

hc

2024-03-26 e9199a72d842cbda78ac614eee5db7cdaa6f2530

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source "$BR2_EXTERNAL_OPENJDK_PATH/package/openjdk-hello-world/Config.in"
source "$BR2_EXTERNAL_OPENJDK_PATH/package/openjdk-jni-test/Config.in"