Package resolving: Don't fail on fuzzy versions (#1355)

When parsing the depends of entries in the APKINDEX file, we ignore
all operators (<, =, >). (This is enough for our use case, was we only
do the dependency resolving to check which packages need to be built
and `apk` does the dependency resolving again before installing
anything).

We did not ignore the ~ character for fuzzy version compares, this is
fixed with this commit.

pmb/parse/apkindex.py

@@ -98,7 +98,7 @@ def parse_next_block(args, path, lines, start):
                 for value in values:
                     if value.startswith("!"):
                         continue
-                    for operator in [">", "=", "<"]:
+                    for operator in [">", "=", "<", "~"]:
                         if operator in value:
                             value = value.split(operator)[0]
                             break