CI: Use --no-doc for docs builds

So we don't choke on `doc_auto_cfg` in the `getrandom` crate just
exclude building docs for dependencies.

Author: tcharding

bitcoin/contrib/test.sh

@@ -93,13 +93,13 @@ cargo --locked run --example taproot-psbt --features=rand-std,bitcoinconsensus
 
 # Build the docs if told to (this only works with the nightly toolchain)
 if [ "$DO_DOCSRS" = true ]; then
-    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features
+    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features --no-deps
 fi
 
 # Build the docs with a stable toolchain, in unison with the DO_DOCSRS command
 # above this checks that we feature guarded docs imports correctly.
 if [ "$DO_DOCS" = true ]; then
-    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features
+    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features --no-deps
 fi
 
 # Fuzz if told to

hashes/contrib/test.sh

@@ -58,13 +58,13 @@ fi
 
 # Build the docs if told to (this only works with the nightly toolchain)
 if [ "$DO_DOCSRS" = true ]; then
-    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features
+    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features --no-deps
 fi
 
 # Build the docs with a stable toolchain, in unison with the DO_DOCSRS command
 # above this checks that we feature guarded docs imports correctly.
 if [ "$DO_DOCS" = true ]; then
-    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features
+    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features --no-deps
 fi
 
 # Webassembly stuff

internals/contrib/test.sh

@@ -44,13 +44,13 @@ fi
 
 # Build the docs if told to (this only works with the nightly toolchain)
 if [ "$DO_DOCSRS" = true ]; then
-    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features
+    RUSTDOCFLAGS="--cfg docsrs -D warnings -D rustdoc::broken-intra-doc-links" cargo +nightly doc --all-features --no-deps
 fi
 
 # Build the docs with a stable toolchain, in unison with the DO_DOCSRS command
 # above this checks that we feature guarded docs imports correctly.
 if [ "$DO_DOCS" = true ]; then
-    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features
+    RUSTDOCFLAGS="-D warnings" cargo +stable doc --all-features --no-deps
 fi
 
 # Run formatter if told to.