Add Java database migration example #151

Job	Run time
dotnet-crosslanguage (6.0.x, 1.19.x)	6m 10s
dotnet-inline-program (6.0.x)	45s
dotnet-inline-secrets (6.0.x)	48s
dotnet-database-migration (6.0.x)	34s
dotnet-local-program (6.0.x)	46s
go-cli-installation (1.20.x)	1m 4s
go-database-migration (1.16.x)	15m 30s
go-git-repo-program (1.20.x)	57s
go-inline-local-hybrid (1.16.x)	55s
go-inline-program (1.16.x)	52s
go-inline-program-secrets (1.16.x)	1m 1s
go-inline-program-secrets-passphrase (1.16.x)	51s
go-local-program (1.16.x)	5m 45s
node-database-migration (20.x, 1.16.x)	16m 17s
node-inline-program (20.x, 1.16.x)	31s
node-inline-program-js (20.x, 1.16.x)	49s
node-inline-program-ts (20.x, 1.16.x)	44s
node-inline-program-tsnode (20.x, 1.16.x)	31s
node-inline-secrets-provider-ts (20.x, 1.16.x)	49s
node-local-program-tsnode (20.x, 1.16.x)	42s
python-crosslanguage (3.9.x, 1.16.x)	5m 38s
python-database-migration (3.9.x, 1.16.x)	19m 20s
python-inline-program (3.9.x, 1.16.x)	58s
python-inline-secrets (3.9.x, 1.16.x)	1m 7s
python-local-program (3.9.x, 1.16.x)	6m 47s
python-testing-local-program	55s
	1h 31m 6s

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