Build and test on all supported Golang versions #4

Job	Run time
build (1.20)	5m 14s
build (1.20)	6m 53s
build (1.19)	5m 12s
build (1.19)	7m 15s
build (1.18, ./example/grpc-client-server ./instrumentation/cloud.google.com/go ./instrumentation...	5m 12s
build (1.18, ./example/grpc-client-server ./instrumentation/cloud.google.com/go ./instrumentation...	6m 52s
build (1.17, ./internal/bin/sql ./example/gin ./example/sql-redis ./example/gorm-postgres ./examp...	4m 54s
build (1.17, ./internal/bin/sql ./example/gin ./example/sql-redis ./example/gorm-postgres ./examp...	7m 1s
build (1.16, ./internal/bin/sql ./example/gin ./example/sql-redis ./example/grpc-client-server ./...	5m 14s
build (1.16, ./internal/bin/sql ./example/gin ./example/sql-redis ./example/grpc-client-server ./...	7m 40s
build (1.15, ./instrumentation/instaredigo ./internal/bin/sql ./example/gin ./example/sql-redis ....	5m 11s
build (1.15, ./instrumentation/instaredigo ./internal/bin/sql ./example/gin ./example/sql-redis ....	6m 48s
build (1.14, ./instrumentation/instaecho ./instrumentation/instaredigo ./internal/bin/sql ./instr...	5m 11s
build (1.14, ./instrumentation/instaecho ./instrumentation/instaredigo ./internal/bin/sql ./instr...	7m 21s
build (1.13, ./instrumentation/instaecho ./instrumentation/instaredigo ./internal/bin/sql ./instr...	5m 12s
build (1.13, ./instrumentation/instaecho ./instrumentation/instaredigo ./internal/bin/sql ./instr...	6m 58s
	1h 38m 8s

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