libdrm: Update version from 2.4.83 to 2.4.88

All announcements but for 2.4.85 [2] are available online [1][3][4][5].

[1] https://lists.x.org/archives/xorg-announce/2017-October/002815.html
[2] https://patchwork.ozlabs.org/patch/831589/
[3] https://lists.x.org/archives/xorg-announce/2017-October/002818.html
[4] https://lists.x.org/archives/xorg-announce/2017-October/002819.html
[5] https://lists.x.org/archives/xorg-announce/2017-November/002820.html

libdrm.be0

@@ -1,6 +1,6 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION libdrm-2.4.83-0
+# BEE_VERSION libdrm-2.4.88-0
 
 ## this file was created by bee init and should be executed to build a
 ## bee-package. (Additional hints are located at the end of this file.)