Update Jester to v0.4.0 and HttpBeast to v0.2.0. Use default GC. (#3938)

frameworks/Nim/httpbeast/httpbeast.dockerfile

@@ -9,6 +9,6 @@ ENV PATH $PATH:/root/.nimble/bin
 
 ADD ./ /httpbeast
 WORKDIR /httpbeast
-RUN nimble c -d:release --threads:on --gc:boehm -y techempower.nim
+RUN nimble c -d:release --threads:on -y techempower.nim
 
 CMD ./techempower

frameworks/Nim/httpbeast/techempower.nimble

@@ -11,4 +11,4 @@ skipExt = @["nim"]
 # Dependencies
 
 requires "nim >= 0.18.0"
-requires "httpbeast#995fe86443d4a0"
+requires "httpbeast#v0.2.0"

frameworks/Nim/jester/jester.dockerfile

@@ -9,7 +9,7 @@ ENV PATH $PATH:/root/.nimble/bin
 
 ADD ./ /jester
 WORKDIR /jester
-RUN nimble install -y httpbeast@#995fe86443d4a0
-RUN nimble c -d:release --threads:on --gc:boehm -y techempower.nim
+RUN nimble install -y httpbeast@#v0.2.0
+RUN nimble c -d:release --threads:on -y techempower.nim
 
 CMD ./techempower

frameworks/Nim/jester/techempower.nimble

@@ -11,4 +11,4 @@ skipExt = @["nim"]
 # Dependencies
 
 requires "nim >= 0.18.0"
-requires "jester#97f6cbc76dfd8"
+requires "jester#v0.4.0"