v5.8.0

• pkg/shortnames
• Finally, split configuration loading and merging
• Reorder merging code in loadConfig to match field order in V2RegistriesConf
• Remove "TODO: separate upper format from internal data below:"
• Move shortNameMode from V2RegistriesConf to parsedConfig
• Behavior change: Move unqualifiedSearchRegistriesOrigin to parsedConfig
• Deprecate TryUpdatingCache return value, warn about parsedConfig.v2
• Some progress: Move aliasCache out of V2RegistriesConf to parsedConfig
• Add a parsedConfig return value to loadConfigFile
• Split shortNameAliasCache.updateWithConfigurationFrom from loadConfig
• Move the creation of shortNameAliasCache to loadConfigFile
• Rename shortNameAliasConf.parseAndValidate to newShortNameAliasCache
• Move the allocation of an empty alias map to editShortNameAlias
• Bump github.com/klauspost/compress from 1.11.1 to 1.11.2
• Split shortNameAliasCache from shortNameAliasConf
• Split the error and success return paths of shortNameAliasConf.parseAndValidate
• Sort Registries in V2RegistriesConf.postProcess
• Make it clearer that .postProcessRegistries() is called on the V2RegistriesConf data
• Make tomlConfig private
• Split loadConfigFile from loadConfig
• Make loadConfig a method on parsedConfig instead of tomlConfig
• Introduce sysregistriesv2.parsedConfig, use it for configCache
• Don't hard-code cache implementation details in tests
• Add a test for correctly merging unqualified-search-registries
• sysregistriesv2: short-name aliasing
• Add GetDigest method to retrieve digest from manifest HEAD request
• Fix misleading network error
• Bump github.com/containers/storage from 1.23.6 to 1.23.7
• docs: update reference to containers-registeries.d.md