po: correct default encoding for Hebrew subtitles (fixes #7474)

(cherry picked from commit f2d861c7341f75ee223b7859c6960d10bafdd1bf)

Conflicts:
	po/he.po

po/he.po

@@ -11063,7 +11063,7 @@ msgstr ""
 #. languages using the Latin alphabet.
 #: modules/codec/subsdec.c:95
 msgid "Default (Windows-1252)"
-msgstr ""
+msgstr "בררת מחדל (Windows-1255)"
 
 #: modules/codec/subsdec.c:96
 msgid "System codeset"
@@ -11281,7 +11281,7 @@ msgstr "מפענח כתוביות טקסט"
 #: modules/codec/subsdec.c:292 modules/demux/avi/avi.c:96
 msgctxt "GetACP"
 msgid "CP1252"
-msgstr ""
+msgstr "CP1255"
 
 #: modules/codec/subsusf.c:46
 msgid "USFSubs"