Fix tar command (#59026)

Scheduled build failing with 
```
cd [buildroot]/deps/srccache/ && /usr/bin/tar --no-same-owner -xfz [buildroot]/deps/srccache/libunwind-1.8.2.tar.gz
/usr/bin/tar: z: Cannot open: No such file or directory
```
Issue probably introduced in
#58796.

According to chatgpt this will fix it

Author: Zentrik

deps/unwind.mk

@@ -20,7 +20,7 @@ $(SRCCACHE)/libunwind-$(UNWIND_VER).tar.gz: | $(SRCCACHE)
 
 $(SRCCACHE)/libunwind-$(UNWIND_VER)/source-extracted: $(SRCCACHE)/libunwind-$(UNWIND_VER).tar.gz
 	$(JLCHECKSUM) $<
-	cd $(dir $<) && $(TAR) -xfz $<
+	cd $(dir $<) && $(TAR) -xzf $<
 	touch -c $(SRCCACHE)/libunwind-$(UNWIND_VER)/configure # old target
 	echo 1 > $@