Bump docker/metadata-action from 4 to 5 #184

Job	Run time
🏗️ Docker image	2m 49s
🔍 Python code format (3.8)	4m 16s
🔍 Python code format (3.9)	4m 10s
🧪 Python integration tests (3.8, pyserini)	6m 4s
🧪 Python integration tests (3.8, pyterrier)	7m 51s
🔍 Python Lint (3.8)	4m 23s
🧪 Python integration tests (3.9, pyserini)	5m 41s
🔍 Python Lint (3.9)	4m 39s
🧪 Python integration tests (3.9, pyterrier)	5m 48s
🔍 Python Lint backend (3.8, pyserini)	5m 52s
🧪 Python unit tests (3.8)	5m 30s
🔍 Python Lint backend (3.8, pyterrier)	6m 40s
🏗️ Python wheel (3.8)	20s
🔍 Python Lint backend (3.9, pyserini)	7m 7s
🧪 Python unit tests (3.9)	5m 14s
🏗️ Python wheel (3.9)	31s
🔍 Python Lint backend (3.9, pyterrier)	7m 34s
🚀 Publish Docker image	0s
🚀 Create GitHub release	0s
🚀 Publish Python wheels	0s
	1h 24m 29s

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