Normalize newlines in requirements.txt

Noticed unusual newlines in a previous commit, this was the only other
file with incorrect newlines.

Author: HexDecimal

requirements.txt

@@ -1,13 +1,13 @@
-attrs>=23.1.0
-cffi>=1.15
-numpy>=1.21.4
-pycparser>=2.14
-requests>=2.28.1
-setuptools==70.0.0
-types-cffi
-types-requests
-types-Pillow
-types-setuptools
-types-tabulate
-typing_extensions
-pcpp==1.30
+attrs>=23.1.0
+cffi>=1.15
+numpy>=1.21.4
+pycparser>=2.14
+requests>=2.28.1
+setuptools==70.0.0
+types-cffi
+types-requests
+types-Pillow
+types-setuptools
+types-tabulate
+typing_extensions
+pcpp==1.30