Merge translation files from master branch.

translations/messages/pl.po

@@ -1,11 +1,12 @@
 # SOME DESCRIPTIVE TITLE.
 # Marek W <coronzon88@gmail.com>, 2023.
+# Eryk Michalak <gnu.ewm@protonmail.com>, 2024.
 msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "POT-Creation-Date: 2021-07-07 18:33+0000\n"
-"PO-Revision-Date: 2023-08-13 15:29+0000\n"
+"PO-Revision-Date: 2024-09-18 05:10+0000\n"
-"Last-Translator: Marek W <coronzon88@gmail.com>\n"
+"Last-Translator: Eryk Michalak <gnu.ewm@protonmail.com>\n"
 "Language-Team: Polish <https://mirror.git.trinitydesktop.org/weblate/"
 "projects/applications/qalculate-tde/pl/>\n"
 "Language: pl\n"
@@ -2155,7 +2156,7 @@ msgstr "Monotoniczny"
 
 #: qalculateplotdialog.cpp:130
 msgid "Natural cubic splines"
-msgstr ""
+msgstr "Naturalna sześcienna funkcja sklejana"
 
 #: qalculateplotdialog.cpp:131
 msgid "Bezier"