chore: append trailing newline to JSON fixtures across math/base

Propagates fix from 87038a4 ("chore: fix EditorConfig lint errors") to twenty additional `math/base/special/*` and `math/base/tools/*` test fixtures whose final byte is not a newline, restoring conformance with the `insert_final_newline` EditorConfig rule.

https://claude.ai/code/session_01QJsHa2HjbAGpNE1xuYAJ6D

Author: claude

lib/node_modules/@stdlib/math/base/special/acscdf/test/fixtures/julia/negative.json

@@ -2003,4 +2003,4 @@
         -1.681436977706416e301,
         -1.6831217842973044e301
     ]
-}
+}

lib/node_modules/@stdlib/math/base/special/acscdf/test/fixtures/julia/positive.json

@@ -2003,4 +2003,4 @@
         1.8091920468370808e18,
         1.8110048645192806e18
     ]
-}
+}

lib/node_modules/@stdlib/math/base/special/asecdf/test/fixtures/julia/negative.json

@@ -2001,4 +2001,4 @@
         -803.4804033955877,
         -804.247719318987
     ]
-}
+}

lib/node_modules/@stdlib/math/base/special/asecdf/test/fixtures/julia/positive.json

@@ -2003,4 +2003,4 @@
         -37.67395394394967,
         -37.69911184307752
     ]
-}
+}

lib/node_modules/@stdlib/math/base/special/cosm1/test/fixtures/python/data.json

@@ -2003,4 +2003,4 @@
         37.67395394394967,
         37.69911184307752
     ]
-}
+}