async updateTimezones(sCLDRVersion) {
		await this.loadTimezonesFiles();
		await this.processABAPTimezonesArray();
		this.processCLDRTimezonesArray(sCLDRVersion);
		this.updateTimezonesMap();
	}
Loads the <code>_timezones.js</code> and <code>TimezoneUtils.js</code> file contents, and
updates the <code>aABAPTimezoneIDs and aCLDRTimezoneIDs</code> arrays in the
<code>_timezones.js</code>, and the <code>mTimezoneAliases2ABAPTimezones</code> in the
<code>TimezoneUtils.js</code> contents.
To write the updated contents back to the actual files, call <code>#writeTimezonesFiles</code>.

@param {string} sCLDRVersion The currently used CLDR version

@throws {Error} If the <code>ABAPTz.json</code> file is older than 7 days