build(flux): prepare Flux release for v0.181.0 (#5144)

Author: jsternberg

libflux/go/libflux/buildinfo.gen.go

@@ -208,7 +208,7 @@ var sourceHashes = map[string]string{
 	"stdlib/experimental/oee/apq_test.flux":                                                       "468e6889dfb02ae4258c828d104620beadceffdef407f6f6f1ce2b2417c724d9",
 	"stdlib/experimental/oee/computeapq_test.flux":                                                "8365fa1734e8bb1336a640dfb14721d9f17e570e555594bc2a31a4dabf2ddca4",
 	"stdlib/experimental/oee/oee.flux":                                                            "9e1023aa525d30144166f32d270673920c69d924946f5aad85a2bc4caa40fec6",
-	"stdlib/experimental/polyline/polyline.flux":                                                  "847044c44c16a9f63c13f6cec2195c2106c9a1544dc55b06b1a9fbae3d6fead2",
+	"stdlib/experimental/polyline/polyline.flux":                                                  "399b70ccf6bae5726bbdd71a8bdd11179e2c128c2c8c9b1f6717c686c8eed39f",
 	"stdlib/experimental/polyline/polyline_test.flux":                                             "16473dce4f71dcdbe1e3f90b350ab1e56a513679cb5c3f872e0f2d7678d42d1f",
 	"stdlib/experimental/preview_test.flux":                                                       "cca570d25b17ed201a0ecc7ebf9e547ccff2aa0814a3ac49f12faa938cbdaf73",
 	"stdlib/experimental/prometheus/prometheus.flux":                                              "e0b3df509c8f522edee1081e5e3907ce9628f783d33b47c2e2d8ffb766f3f948",

stdlib/experimental/polyline/polyline.flux

@@ -4,7 +4,7 @@
 // This is done by reducing the number of vertices that do not contribute significantly to the convexity and concavity of the shape.
 //
 // ## Metadata
-// introduced: NEXT
+// introduced: 0.181.0
 //
 package polyline