tests: Update error checks when running w/o pkg-config

The error message that gets emmited changed with 183e4b8, but the tests
did not get adjusted.

Author: sp1ritCS

test cases/failing/101 no fallback/test.json

@@ -2,7 +2,7 @@
   "stdout": [
     {
       "match": "re",
-      "line": ".*/meson\\.build:2:11: ERROR: (Pkg-config binary for machine MachineChoice\\.HOST not found\\. Giving up\\.|Dependency \"foob\" not found, tried .*)"
+      "line": ".*/meson\\.build:2:11: ERROR: (Dependency lookup for foob with method 'pkgconfig' failed: Pkg-config for machine host machine not found\\. Giving up\\.|Dependency \"foob\" not found, tried .*)"
     }
   ]
 }

test cases/failing/108 empty fallback/test.json

@@ -2,7 +2,7 @@
     "stdout": [
         {
             "match": "re",
-            "line": "test cases/failing/108 empty fallback/meson.build:6:0: ERROR: Dependency \"foo\" not found.*"
+            "line": "test cases/failing/108 empty fallback/meson.build:6:0: ERROR: (Dependency lookup for foo with method 'pkgconfig' failed: Pkg-config for machine host machine not found\\. Giving up\\.|Dependency \"foo\" not found.*)"
         }
     ]
 }

test cases/failing/34 dependency not-required then required/test.json

@@ -2,7 +2,7 @@
   "stdout": [
     {
       "match": "re",
-      "line": ".*/meson\\.build:4:10: ERROR: (Pkg-config binary for machine MachineChoice\\.HOST not found\\. Giving up\\.|Dependency \"foo\\-bar\\-xyz\\-12\\.3\" not found, tried .*)"
+      "line": ".*/meson\\.build:4:10: ERROR: (Dependency lookup for foo\\-bar\\-xyz\\-12\\.3 with method 'pkgconfig' failed: Pkg-config for machine host machine not found\\. Giving up\\.|Dependency \"foo\\-bar\\-xyz\\-12\\.3\" not found, tried .*)"
     }
   ]
 }