Fix ghc-wasm-meta version (and bump it)

It is more robust to explicitly have to bump the ghc-wasm-meta version, in case something similar happens to the emsdk version getting updated when another image was modified.

images/alpine.dhall

@@ -70,11 +70,11 @@ let installGhcDepsStep: CF.Type =
 
 let installWasmDepsStep: CF.Type =
       CF.run "Installing wasm backend dependencies"
-      [ "curl -f -L --retry 5 https://gitlab.haskell.org/ghc/ghc-wasm-meta/-/archive/master/ghc-wasm-meta-master.tar.gz | tar xz"
-      , "cd ghc-wasm-meta-master"
+      [ "curl -f -L --retry 5 https://gitlab.haskell.org/ghc/ghc-wasm-meta/-/archive/7a894913469be676261236c9050b3e301fba24d3/ghc-wasm-meta-master.tar.gz | tar xz"
+      , "cd ghc-wasm-meta-*"
       , "SKIP_GHC=1 ./setup.sh"
       , "cd .."
-      , "rm -r ghc-wasm-meta-master" ]
+      , "rm -r ghc-wasm-meta-*" ]
 
 let
   ghcVersion: Text = "9.4.3"