Adjust Rust toolchain, clippy, and minor ci changes #7848

Job	Run time
workspace_clippy (askar_wallet)	3m 31s
verify-code-formatting	26s
workflow-setup	24s
aries_vcx_clippy (anoncreds,askar_wallet)	2m 5s
aries_vcx_clippy (vdr_proxy_ledger,askar_wallet)	2m 1s
build-docker-vdrproxy	11s
test-integration-did-crate	3m 52s
test-integration-aries-vcx (askar_wallet,anoncreds)	8m 39s
build-docker-aath-backchannel	0s
test-unit-workspace	4m 20s
workflow-setup-check	1s
publish-docker-aath-backchannel	0s
test-integration-aries-vcx-vdrproxy	14m 24s
publish-docker-vdrproxy	3s
make-release	0s
	39m 57s

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