Add optparse-applicative >=0.14 lower bound

with 0.11-0.13 we get an error

```
Test/Tasty/Patterns.hs:41:10:
    Ambiguous occurrence `runParser'
    It could refer to either `Test.Tasty.Patterns.Parser.runParser',
                             imported from `Test.Tasty.Patterns.Parser'
at Test/Tasty/Patterns.hs:14:1-33
                             (and originally defined at
Test/Tasty/Patterns/Parser.hs:57:1-9)
                          or `Options.Applicative.runParser',
```

core/tasty.cabal

@@ -63,7 +63,7 @@ library
     containers,
     mtl >= 2.1.3.1,
     tagged >= 0.5,
-    optparse-applicative >= 0.11,
+    optparse-applicative >= 0.14,
     deepseq >= 1.3,
     unbounded-delays >= 0.1,
     async >= 2.0,