Update volare for GF180 PDK

[vijayank88]

Description

I've used following command for GF180 PDK installation:

export PDK_FAMILY=gf180mcu
export PDK=gf180mcuC
cd OpenLane && make

Its has successfully installed GF180 pdk and able to complete make test
But latest PDK commit not updated from google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0@d379868 as it resolves fanout issue discussed in The-OpenROAD-Project/OpenROAD#2339

Expected Behavior

Update GF180 PDK volare version to google/globalfoundries-pdk-libs-gf180mcu_fd_sc_mcu7t5v0@d379868

default_fanout_load : 1.0000000000 ; to be added in liberty files.

Environment report

Kernel: Linux v3.10.0-1160.49.1.el7.x86_64
Distribution: centos 7
Python: v3.6.8 (OK)
Container Engine: docker v20.10.16 (OK)
OpenLane Git Version: 8b391c09ae913c7b4e5c64a29a352ef0e9df41e0
pip: INSTALLED
python-venv: INSTALLED
---
PDK Version Verification Status: FAILED
Failed to verify sky130A.
---
Git Log (Last 3 Commits)

8b391c0 2022-11-09T04:19:46+02:00 Change Issue Templates to Issue Forms (#1476) - Mohamed Gaber -  (HEAD -> master, tag: 2022.11.10, origin/master, origin/HEAD)
ddcc5c9 2022-11-09T04:14:39+02:00 [BOT] Update openroad_app (#1466) - Openlane Bot -  ()
a0b19fa 2022-11-01T19:09:25+02:00 Add Wire Length Checker (#1463) - Mohamed Gaber -  (tag: 2022.11.02)
---
Git Remotes

origin	https://github.com/The-OpenROAD-Project/OpenLane (fetch)
origin	https://github.com/The-OpenROAD-Project/OpenLane (push)

Reproduction material

%./flow.tcl -design aes

Relevant log output

Fanout issue log: 16-global.log

Fanout     Cap    Slew   Delay    Time   Description
-----------------------------------------------------------------------------
                          0.00    0.00   clock clk (rise edge)
                          0.00    0.00   clock network delay (propagated)
                          8.00    8.00 ^ input external delay
                  1.14    0.60    8.60 ^ reset_n (in)
     2    0.05                           reset_n (net)
                  1.14    0.00    8.60 ^ input10/I (gf180mcu_fd_sc_mcu7t5v0__buf_20)
                  2.13    1.07    9.67 ^ input10/Z (gf180mcu_fd_sc_mcu7t5v0__buf_20)
   450    2.02                           net10 (net)

[vijayank88]

@proppy fyi

[proppy]

@vijayank88 I believe that will be fixed after merging google/gf180mcu-pdk#91.

The PDK will have to be rebuilt and published manually, until #1377 is addressed.