change min Julia version to 1.9

tknopp · tknopp · commit bb138113d7ff · 2023-08-25T10:21:42.000+02:00
diff --git a/Project.toml b/Project.toml
@@ -22,7 +22,7 @@ LinearOperatorFFTWExt = "FFTW"
 LinearOperatorNFFTExt = ["NFFT", "FFTW"]
 
 [compat]
-julia = "1.6"
+julia = "1.9"
 FFTW = "1.0"
 LinearOperators = "2.3.3"
 Reexport = "1.0"
