rpcd: update to latest Git head

rpcd: update to latest Git head

3aa81d0 file: access exec timeout via daemon ops structure
7235f34 plugin: store pointer to exec timeout value in the ops structure
ccd7c0a treewide: rename exec_timeout to rpc_exec_timeout
c79ef22 main: fix logic bug when not specifying a timeout option
2cc4b99 file: use global exec timeout instead of own hardcoded limit
ecd1660 exec: increase maximum execution time to 120s
41333ab uci: tighten uci reorder operation error handling
f91751b uci: tighten uci delete operation error handling
c2c612b uci: tighten uci set operation error handling
948bb51 uci: tighten uci add operation error handling
51980c6 uci: reject invalid section and option names

Signed-off-by: Jo-Philipp Wich <jo@mein.io>