Update spec test to latest commit (#3293)

- Update spec test cases to commit bc76fd79cfe61033d7f4ad4a7e8fc4f996dc5ba8 on Apr. 3
- Update wabt binary to 1.0.34 to support newer spec cases
- Add comparison between table declared elem type and table elem segment value type
- Add a function to decide whether to execute test cases in a running mode
- Keep using interpreter in GC spec because wat2wasm in wabt can't compile if.wast w/o errors
- Re-factoring threads spec test case processing
- Since wabt 1.0.34 release isn't compatible with ubuntu 20.04, compile it from source code
- Disable CI to run aot multi-module temporarily, and will enable it in another PR

tests/wamr-test-suites/spec-test-script/simd_ignore_cases.patch

@@ -1,5 +1,5 @@
 diff --git a/test/core/simd/simd_lane.wast b/test/core/simd/simd_lane.wast
-index 9d4b5fd7..4656dd2b 100644
+index 9b66f53..48a4e6d 100644
 --- a/test/core/simd/simd_lane.wast
 +++ b/test/core/simd/simd_lane.wast
 @@ -602,23 +602,23 @@
@@ -50,7 +50,7 @@ index 9d4b5fd7..4656dd2b 100644
  ;; Non-nat lane index
  
 diff --git a/test/core/simd/simd_load.wast b/test/core/simd/simd_load.wast
-index 4b2edc16..c7639218 100644
+index 4b2edc1..c763921 100644
 --- a/test/core/simd/simd_load.wast
 +++ b/test/core/simd/simd_load.wast
 @@ -124,7 +124,7 @@