meson: Bump requirement to 1.1
WARNING: Project specifies a minimum meson_version '>= 0.60' but uses features which were added in newer versions:
* 1.1.0: {'feature_option.enable_if()'}Caused by !1363 (merged)
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WARNING: Project specifies a minimum meson_version '>= 0.60' but uses features which were added in newer versions:
* 1.1.0: {'feature_option.enable_if()'}Caused by !1363 (merged)