scripts/bootstrap: update bootstrap deps

apk-tools no longer depends on libfetch
build-base now depends on file

scripts/bootstrap.sh

@@ -97,7 +97,7 @@ apk info --quiet --installed --root "$CBUILDROOT" libgcc libstdc++ musl-dev || \
 # ordered cross-build
 for PKG in fortify-headers linux-headers musl libc-dev pkgconf zlib \
 	   busybox busybox-initscripts binutils make \
-	   libressl libfetch apk-tools \
+	   libressl apk-tools file \
 	   gmp mpfr3 mpc1 isl cloog gcc \
 	   openrc alpine-conf alpine-baselayout alpine-keys alpine-base build-base \
 	   attr libcap patch sudo acl fakeroot tar \