[OpenMP][Tests][NFC] Fix libarcher tests for GCC

TSan in GCC filters duplicates less aggressively. With 8 threads we can expect reports for up to 7 pairs of data race in some tests. Tests pass now with GCC 10, 11, 12

Author: jprotze

openmp/tools/archer/tests/races/critical-unrelated.c

@@ -38,4 +38,4 @@ int main(int argc, char *argv[]) {
 // CHECK: Previous write of size 4
 // CHECK-NEXT: #0 {{.*}}critical-unrelated.c:29
 // CHECK: DONE
-// CHECK: ThreadSanitizer: reported {{[1-3]}} warnings
+// CHECK: ThreadSanitizer: reported {{[1-7]}} warnings

openmp/tools/archer/tests/races/lock-nested-unrelated.c

@@ -44,4 +44,4 @@ int main(int argc, char *argv[]) {
 // CHECK: Previous write of size 4
 // CHECK-NEXT: #0 {{.*}}lock-nested-unrelated.c:33
 // CHECK: DONE
-// CHECK: ThreadSanitizer: reported {{[1-3]}} warnings
+// CHECK: ThreadSanitizer: reported {{[1-7]}} warnings

openmp/tools/archer/tests/races/lock-unrelated.c

@@ -44,4 +44,4 @@ int main(int argc, char *argv[]) {
 // CHECK: Previous write of size 4
 // CHECK-NEXT: #0 {{.*}}lock-unrelated.c:31
 // CHECK: DONE
-// CHECK: ThreadSanitizer: reported 1 warnings
+// CHECK: ThreadSanitizer: reported {{[1-7]}} warnings

openmp/tools/archer/tests/races/parallel-simple.c

@@ -33,4 +33,4 @@ int main(int argc, char *argv[]) {
 // CHECK: Previous write of size 4
 // CHECK-NEXT: #0 {{.*}}parallel-simple.c:23
 // CHECK: DONE
-// CHECK: ThreadSanitizer: reported {{[1-3]}} warnings
+// CHECK: ThreadSanitizer: reported {{[1-7]}} warnings