fix(deps): update dependency postcss-rtlcss to v5

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
postcss-rtlcss	4.0.9 -> 5.1.0

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Release Notes

elchininet/postcss-rtlcss (postcss-rtlcss)

v5.1.0

Compare Source

• New directives to set the option processRuleNames: /*rtl:rules*/, /*rtl:begin:rules*/, and /*rtl:end:rules*/

v5.0.0

Compare Source

• Breaking change: removed autoRename option and /*rtl:rename*/, /*rtl:begin:rename*/, and /*rtl:end:rename*/ directives
• Fixed a bug: /*rtl:begin:urls*/ and /*rtl:end:urls*/ (previously /*rtl:begin:rename*/ and /*rtl:end:rename*/) blocks didn't change the URL names inside rules if started outside
• New option: processRuleNames, if this option is true, rules with no directional properties that match any entry in the stringMap will be swapped when the direction changes
• New directives: /*rtl:urls*/, /*rtl:begin:urls*/, and /*rtl:end:urls*/ have replaced /*rtl:rename*/, /*rtl:begin:rename*/, and /*rtl:end:rename*/ and they only take effect in declarations' URLs

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