gh-37548: Upgrade prompt_toolkit to 3.0.43
    
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Fixes #37539.

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### ⌛ Dependencies

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URL: #37548
Reported by: Kwankyu Lee
Reviewer(s):

Author: Release Manager

build/pkgs/prompt_toolkit/checksums.ini

@@ -1,5 +1,5 @@
 tarball=prompt_toolkit-VERSION.tar.gz
-sha1=d36c3286a16c09b9bc02c2733b9fc7a8a9c30ba1
-md5=252a5d200e41d46b65a3076d2bc0a4bd
-cksum=361343842
+sha1=b5ada8cb45c11f9184c990bd33a98d3d690e6edc
+md5=f33c0f4ae8d11addababf6d90c98f8bc
+cksum=1262534330
 upstream_url=https://pypi.io/packages/source/p/prompt_toolkit/prompt_toolkit-VERSION.tar.gz

build/pkgs/prompt_toolkit/package-version.txt

@@ -1 +1 @@
-3.0.41
+3.0.43