Bump OCaml lower bound to 4.14

.github/workflows/unlocked.yml

@@ -21,9 +21,6 @@ jobs:
           - 5.0.x
           - ocaml-variants.4.14.0+options,ocaml-option-flambda
           - 4.14.x
-          - 4.13.x
-          - 4.12.x
-          - 4.10.x
         apron:
           - false
           - true

dune-project

@@ -23,7 +23,7 @@
   (name goblint)
   (synopsis "Static analysis framework for C")
   (depends
-    (ocaml (>= 4.10))
+    (ocaml (>= 4.14))
     (goblint-cil (>= 2.0.3)) ; TODO no way to define as pin-depends? Used goblint.opam.template to add it for now. https://github.com/ocaml/dune/issues/3231. Alternatively, removing this line and adding cil as a git submodule and `(vendored_dirs cil)` as ./dune also works. This way, no more need to reinstall the pinned cil opam package on changes. However, then cil is cleaned and has to be rebuild together with goblint.
     (batteries (>= 3.5.1))
     (zarith (>= 1.10))

goblint.opam

@@ -21,7 +21,7 @@ doc: "https://goblint.readthedocs.io/en/latest/"
 bug-reports: "https://github.com/goblint/analyzer/issues"
 depends: [
   "dune" {>= "3.7"}
-  "ocaml" {>= "4.10"}
+  "ocaml" {>= "4.14"}
   "goblint-cil" {>= "2.0.3"}
   "batteries" {>= "3.5.1"}
   "zarith" {>= "1.10"}