gh-36083: build/pkgs/jupyter_core: Update to 4.12.0

    
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Resolves #35953
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URL: #36083
Reported by: Matthias Köppe
Reviewer(s): Frédéric Chapoton

build/pkgs/jupyter_core/checksums.ini

@@ -1,5 +1,5 @@
 tarball=jupyter_core-VERSION.tar.gz
-sha1=6e48f90477c11ad41b9404732a2bdcb485f4e630
-md5=84d207d4c48513a2b87ff2ed508beb98
-cksum=2072829465
+sha1=2a0a14c4c1624826100d59169636bb588465deb9
+md5=7586526dd4ca9d1bc820a4a5429df48b
+cksum=1776144013
 upstream_url=https://pypi.io/packages/source/j/jupyter_core/jupyter_core-VERSION.tar.gz

build/pkgs/jupyter_core/package-version.txt

@@ -1 +1 @@
-4.11.2
+4.12.0