fix: mark RegEx pattern as a raw string #1078

Job	Run time
Making sure no other CI is running	17s
Cleanup test account	3s
Testing the applicationloadbalancer modules	51s
Testing the user-management modules	45s
Testing the managed-backup modules	46s
Testing the compute-engine modules	1h 44m 36s
Testing the dbaas-postgres modules	46s
Testing the dbaas-mongo modules	50s
Testing the managed-kubernetes modules	44s
Testing the dbaas-mariadb modules	45s
Testing the natgateway modules	49s
Testing the networkloadbalancer modules	48s
Testing the certificate modules	52s
Testing the container-registry modules	48s
Testing the dataplatform modules	47s
Testing the logging modules	50s
Testing the dns modules	49s
Testing the vm-autoscaling modules	47s
	1h 56m 53s

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