pango: Update C library version requirements

Author: sdroege

pango/Cargo.toml

@@ -21,6 +21,7 @@ v1_48 = ["v1_46", "pango-sys/v1_48"]
 v1_50 = ["v1_48", "pango-sys/v1_50"]
 v1_52 = ["v1_50", "pango-sys/v1_52"]
 v1_54 = ["v1_52", "pango-sys/v1_54"]
+v1_56 = ["v1_54", "pango-sys/v1_56"]
 
 [dependencies]
 pango-sys.workspace = true

pango/sys/Cargo.toml

@@ -80,10 +80,10 @@ version = "1.50"
 version = "1.52"
 
 [package.metadata.system-deps.pango.v1_54]
-version = "1.53"
+version = "1.54"
 
 [package.metadata.system-deps.pango.v1_56]
-version = "1.56"
+version = "1.55"
 
 [package.metadata.docs.rs]
 rustc-args = ["--cfg", "docsrs"]