Update composer dependencies

vendor/michelf/php-markdown/test/resources/php-markdown-extra.mdtest/Tilde Fenced Code Blocks.text

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+~~~
+<Fenced>
+~~~
+
+Code block starting and ending with empty lines:
+~~~
+
+
+<Fenced>
+
+
+~~~
+
+Indented code block containing fenced code block sample:
+
+	~~~
+	<Fenced>
+	~~~
+
+Fenced code block with indented code block sample:
+
+~~~
+Some text
+
+	Indented code block sample code
+~~~
+
+Fenced code block with long markers:
+
+~~~~~~~~~~~~~~~~~~
+Fenced
+~~~~~~~~~~~~~~~~~~
+
+Fenced code block with fenced code block markers of different length in it:
+
+~~~~
+In code block
+~~~
+Still in code block
+~~~~~
+Still in code block
+~~~~
+
+Fenced code block with Markdown header and horizontal rule:
+
+~~~
+#test
+---
+~~~
+
+Fenced code block with link definitions, footnote definition and 
+abbreviation definitions:
+
+~~~
+[example]: http://example.com/
+
+[^1]: Footnote def
+
+*[HTML]: HyperText Markup Language
+~~~
+
+* In a list item with smalish indent:
+
+  ~~~~~
+  #!/bin/sh
+  #
+  # Preload driver binary
+  LD_PRELOAD=libusb-driver.so $0.bin $*
+  ~~~~~
+  
+With HTML content.
+  
+~~~~~
+<b>bold</b>
+~~~~~
+
+Bug with block level elements in this case:
+~~~
+  <div>
+  </div>
+~~~
+
+Indented code block of a fenced code block:
+
+    ~~~
+	haha!
+	~~~
+
+With class:
+  
+~~~~~html
+<b>bold</b>
+~~~~~
+  
+~~~~~ html
+<b>bold</b>
+~~~~~
+  
+~~~~~.html
+<b>bold</b>
+~~~~~
+  
+~~~~~ .html
+<b>bold</b>
+~~~~~
+
+With extra attribute block:
+
+~~~~~{.html}
+<b>bold</b>
+~~~~~
+  
+~~~~~ {.html #codeid}
+<b>bold</b>
+~~~~~
+
+~~~~~ .html{.bold}
+<div>
+~~~~~
+  
+~~~~~ .html {#codeid}
+</div>
+~~~~~