trying to fix testing pipeline

.github/workflows/test-suite.yml

@@ -1,4 +1,4 @@
-name: C/C++ CI
+name: Test Suite
 
 on:
   push:
@@ -9,12 +9,10 @@ on:
 jobs:
   test:
 
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-latest
 
     steps:
     - uses: actions/checkout@v2
-    - name: install deps
-      run: sudo apt update && sudo apt install libpthread-stubs0-dev libc6
     - name: make test
       run: make test
     - name: run tests

Makefile

@@ -1,7 +1,7 @@
 CC       = gcc
 CFLAGS   = -std=c99 -Wall -D_POSIX_C_SOURCE=201112L -D_XOPEN_SOURCE=500 -D_GNU_SOURCE -static -g
 LD       = gcc
-LDFLAGS  = -lpthread -lrt
+LDFLAGS  = -pthread -lrt
 AR       = ar
 ARFLAGS  = rcs