Attempt to resolve Linux unit test failures

Author: SomeRandomiOSDev

Sources/CBORCoding/CBORParser.swift

@@ -639,6 +639,12 @@ internal class CBORParser {
                     } else {
                         result = (.nan, 3)
                     }
+                } else if half.isInfinite {
+                    if half.sign == .minus {
+                        result = (-.infinity, 3)
+                    } else {
+                        result = (.infinity, 3)
+                    }
                 } else if let value = T(exactly: half) {
                     result = (value, 3)
                 } else {
@@ -659,6 +665,12 @@ internal class CBORParser {
                     } else {
                         result = (.nan, 5)
                     }
+                } else if float.isInfinite {
+                    if float.sign == .minus {
+                        result = (-.infinity, 5)
+                    } else {
+                        result = (.infinity, 5)
+                    }
                 } else if let value = T(exactly: float) {
                     result = (value, 5)
                 } else {
@@ -679,6 +691,12 @@ internal class CBORParser {
                     } else {
                         result = (.nan, 9)
                     }
+                } else if double.isInfinite {
+                    if double.sign == .minus {
+                        result = (-.infinity, 9)
+                    } else {
+                        result = (.infinity, 9)
+                    }
                 } else if let value = T(exactly: double) {
                     result = (value, 9)
                 } else {