solution: use gradle 7.2

Co-authored-by: Brian McGee <brian@41north.dev>

nix/pkgs/protoc-gen-grpc-java/default.nix

@@ -0,0 +1,23 @@
+{ stdenv, runCommand, fetchurl, autoPatchelfHook, lib }:
+
+stdenv.mkDerivation rec {
+  pname = "protoc-gen-grpc-java";
+  version = "1.38.0";
+
+  src = fetchurl {
+    url = "https://repo1.maven.org/maven2/io/grpc/protoc-gen-grpc-java/${version}/protoc-gen-grpc-java-${version}-linux-x86_64.exe";
+    sha256 = "sha256:1gy5lkxj6d4vrgalwnjp15biybcnrmp695si9878y7high39ymr3";
+  };
+
+  nativeBuildInputs = [ autoPatchelfHook ];
+
+  unpackPhase = ''
+    cp $src ./bin
+    chmod +x ./bin
+  '';
+
+  installPhase = ''
+    mkdir -p $out/bin
+    mv ./bin $out/bin/$pname
+  '';
+}