Update tex2lyx tests after the format change

The diff consists of only the format number, which is expected since
there is no instance of "\nopagebreak" in the .tex files.

src/tex2lyx/test/CJK.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/CJKutf8.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/DummyDocument.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/Dummy~Document.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/XeTeX-polyglossia.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/algo2e.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/beamer.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/box-color-size-space-align.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/listpreamble.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/tabular-x-test.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-insets-basic.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-insets.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-memoir.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-minted.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-modules.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-refstyle-theorems.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-scr.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test-structure.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/test.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true

src/tex2lyx/test/verbatim.lyx.lyx

@@ -1,5 +1,5 @@
 #LyX file created by tex2lyx 2.4
-\lyxformat 598
+\lyxformat 599
 \begin_document
 \begin_header
 \save_transient_properties true