ci: sanitize environment variables for PR SHA and number

[felicityzhao9]

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Description of changes:

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[github-actions]

File	Coverage	Lines	Branches
All files	52%	59%	45%	❌
com.aws.greengrass.logging.impl.GreengrassLogMessage$CustomThrowableSerializer	100%	100%	0%	✅
com.aws.greengrass.logging.impl.Slf4jFactory	0%	0%	0%	❌
com.aws.greengrass.logging.impl.LogEventBuilderImpl	76%	93%	60%	✅
com.aws.greengrass.logging.impl.Slf4jLogAdapter	80%	92%	68%	✅
com.aws.greengrass.logging.impl.Slf4jFactory$LogAdapter	0%	0%	0%	❌
com.aws.greengrass.logging.impl.LogManager	24%	37%	10%	❌
com.aws.greengrass.logging.impl.GreengrassLogMessage	93%	87%	100%	✅
com.aws.greengrass.telemetry.impl.config.TelemetryConfig	58%	74%	42%	❌
com.aws.greengrass.logging.impl.config.PersistenceConfig	63%	79%	47%	❌
com.aws.greengrass.logging.impl.config.PersistenceConfig$BasicEncoder	100%	100%	0%	✅
com.aws.greengrass.logging.impl.config.LogFormat	100%	100%	0%	✅
com.aws.greengrass.logging.impl.config.LogStore	100%	100%	0%	✅
com.aws.greengrass.logging.impl.config.LogConfig	83%	96%	70%	✅
ch.qos.logback.core.util.ExecutorServiceUtil$1	56%	62%	50%	❌
ch.qos.logback.core.util.ExecutorServiceUtil	27%	37%	16%	❌
com.aws.greengrass.logging.examples.LoggerDemo	0%	0%	0%	❌
com.aws.greengrass.logging.api.LogEventBuilder$1	100%	100%	0%	✅
com.aws.greengrass.logging.api.LogEventBuilder	20%	20%	0%	❌
com.aws.greengrass.telemetry.examples.TelemetryDemo	0%	0%	0%	❌
com.aws.greengrass.logging.impl.config.model.LogConfigUpdate	0%	0%	0%	❌
com.aws.greengrass.telemetry.models.TelemetryAggregation	100%	100%	0%	✅
com.aws.greengrass.telemetry.models.TelemetryUnit	100%	100%	0%	✅
org.slf4j.impl.StaticMDCBinder	66%	66%	0%	✅
org.slf4j.impl.GreengrassServiceProvider	0%	0%	0%	❌
org.slf4j.impl.StaticLoggerBinder	0%	0%	0%	❌
com.aws.greengrass.telemetry.impl.TelemetryLoggerMessage	75%	75%	0%	✅
com.aws.greengrass.telemetry.impl.MetricFactory	100%	100%	100%	✅

Minimum allowed coverage is 65%

Generated by 🐒 cobertura-action against 56d51b0