Update CI tags for merged rubyspecs.

spec/tags/ruby/library/socket/basicsocket/recv_tags.txt

@@ -1,2 +1,3 @@
 fails:BasicSocket#recv receives a specified number of bytes of a message from another socket
 fails:BasicSocket#recv accepts flags to specify unusual receiving behaviour
+critical:BasicSocket#recv gets lines delimited with a custom separator

spec/tags/ruby/library/uri/equality_tags.txt

@@ -1 +1,2 @@
 fails:URI#== returns true only if the normalized forms are equivalent
+fails:URI#== ignores capitalization of scheme

spec/tags/ruby/library/zlib/gzipreader/each_byte_tags.txt

@@ -0,0 +1,2 @@
+fails:GzipReader#each_byte calls the given block for each byte in the stream, passing the byte as an argument
+fails:GzipReader#each_byte increments position before calling the block

spec/tags/ruby/library/zlib/gzipreader/getc_tags.txt

@@ -0,0 +1,3 @@
+fails:GzipReader#getc returns the next byte from the stream
+fails:GzipReader#getc increments position
+fails:GzipReader#getc returns nil at the end of the stream

spec/tags/ruby/library/zlib/gzipreader/rewind_tags.txt

@@ -1,2 +1,4 @@
 fails:GzipReader#rewind resets the position of the file pointer
 fails:GzipReader#rewind invokes seek method on the associated IO object
+fails:GzipReader#rewind resets the position of the stream pointer
+fails:GzipReader#rewind resets the position of the stream pointer to data previously read