Use semvar-compliant version number

Clippy emits:

 error: the since field must contain a semver-compliant version

As suggested, use a semvar-compliant version number.

Author: tcharding

src/psbt/finalizer.rs

@@ -320,7 +320,7 @@ fn interpreter_inp_check<C: secp256k1::Verification, T: Borrow<TxOut>>(
 /// finalized psbt which involves checking the signatures/ preimages/timelocks.
 /// The functions fails it is not possible to satisfy any of the inputs non-malleably
 /// See [finalize_mall] if you want to allow malleable satisfactions
-#[deprecated(since = "7.0", note = "Please use PsbtExt::finalize instead")]
+#[deprecated(since = "7.0.0", note = "Please use PsbtExt::finalize instead")]
 pub fn finalize<C: secp256k1::Verification>(
     psbt: &mut Psbt,
     secp: &Secp256k1<C>,