add Reproducible Builds badge #83

Job	Run time
Verify / ubuntu-latest jdk-17-zulu 3.9.9	53s
Verify / setup-matrix	1s
Verify / ubuntu-latest jdk-17-zulu 3.6.3	28s
Verify / ubuntu-latest jdk-17-zulu 3.9.9	2s
Verify / ubuntu-latest jdk-21-zulu 3.6.3	31s
Verify / ubuntu-latest jdk-21-zulu 3.9.9	28s
Verify / ubuntu-latest jdk-8-zulu 3.6.3	20s
Verify / ubuntu-latest jdk-8-zulu 3.9.9	22s
Verify / windows-latest jdk-17-zulu 3.6.3	49s
Verify / windows-latest jdk-17-zulu 3.9.9	1m 4s
Verify / windows-latest jdk-21-zulu 3.6.3	1m 19s
Verify / windows-latest jdk-21-zulu 3.9.9	57s
Verify / windows-latest jdk-8-zulu 3.6.3	1m 14s
Verify / windows-latest jdk-8-zulu 3.9.9	52s
Verify / macos-latest jdk-17-zulu 3.6.3	29s
Verify / macos-latest jdk-17-zulu 3.9.9	34s
Verify / macos-latest jdk-21-zulu 3.6.3	31s
Verify / macos-latest jdk-21-zulu 3.9.9	33s
Verify / macos-latest jdk-8-zulu 3.6.3	37s
Verify / macos-latest jdk-8-zulu 3.9.9	32s
	12m 36s

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