Update content-hash and remove pinned deps

Update content-hash since I fixed it in filips123/ContentHashPy#3 fixing also
multiformats here hashberg-io/multiformats#16.

Now content-hash has mantained and updated dependencies and this allows to remove pinned dependencies that
we couldn't change due to constraints in those libraries

requirements.txt

@@ -3,7 +3,7 @@ greenlet==2.0.2
 gevent-websocket==0.10.1  # like the below is abandoned
 wsaccel==0.6.6  # recommended for acceleration of gevent-websocket. But abandoned.
 web3==5.31.3
-rotki-content-hash==0.0.3  # fork of content-hash due to https://github.com/filips123/ContentHashPy/issues/1
+content-hash==2.0.0
 rotki-pysqlcipher3==2023.7.1
 requests==2.31.0
 urllib3==1.26.14
@@ -43,10 +43,5 @@ packaging==23.1
 
 bip-utils==2.8.0
 
-typing-extensions==4.5.0 # used for typing.ParamSpec and typing.Concatenate (in stdlib since python 3.10). Also limiting temporarily to 4.5.0 due to a bug in multiformats which is used by rotki-content-hash: https://github.com/hashberg-io/multiformats/issues/10
-
 #constraints
-pycparser<=2.17 # ugly -- to avoid https://github.com/eliben/pycparser/pull/198
-
-multiformats==0.2.1  # used in rotki-content-hash but is not pinned in a sub-dependency. the latest version is 0.3.1 which breaks the app for us
-multiformats-config==0.2.0.post4
+pycparser<=2.17 # ugly -- to avoid https://github.com/eliben/pycparser/pull/198