Add newly normalized files

Since this PR was originally opened several new files were added that
used the wrong line ending. This commit just is the line ending
normalization that git does automatically with this change to the
.gitattributes.

Author: mtreinish

releasenotes/notes/2.3/box-op-copy-deep-d5cb77bbf1f8baa2.yaml

@@ -1,6 +1,6 @@
----
-fixes:
-  - |
-    Fixes  the implementation of :meth:`~object.__deepcopy__` in class:`.QuantumCircuit`
-    which did not deep-copy circuit parameters. As a consequence, mutating
-    a :class:`.BoxOp` in a copied circuit no longer affects the original circuit.
+---
+fixes:
+  - |
+    Fixes  the implementation of :meth:`~object.__deepcopy__` in class:`.QuantumCircuit`
+    which did not deep-copy circuit parameters. As a consequence, mutating
+    a :class:`.BoxOp` in a copied circuit no longer affects the original circuit.

releasenotes/notes/2.3/fix-hybrid-visualization-layering-2c7e3d1a47d3d1d8.yaml

@@ -1,4 +1,4 @@
----
-fixes:
-  - |
-    Fixed the circuit text drawer so that circuit instructions with classical wires are drawn in separate layers.
+---
+fixes:
+  - |
+    Fixed the circuit text drawer so that circuit instructions with classical wires are drawn in separate layers.

releasenotes/notes/2.3/preserve-falsy-pass-output-6849d360ba696fd9.yaml

@@ -1,7 +1,7 @@
----
-fixes:
-  - |
-    :class:`.BasePassManager` no longer replaces falsy but valid outputs from
-    passes with the original input program. A pass returning ``0``, ``False``
-    or another falsy value will now be preserved, and only ``None`` indicates
-    failure.
+---
+fixes:
+  - |
+    :class:`.BasePassManager` no longer replaces falsy but valid outputs from
+    passes with the original input program. A pass returning ``0``, ``False``
+    or another falsy value will now be preserved, and only ``None`` indicates
+    failure.

releasenotes/notes/2.3/statevector-identity-expval-performance-2b1a7b9f5d86c1d5.yaml

@@ -1,7 +1,7 @@
----
-upgrade_quantum_info:
-  - |
-    Improved the performance of :meth:`.Statevector.expectation_value` for
-    all-identity Pauli operators by relying on the optimized general-case
-    implementation instead of a dedicated shortcut that scaled poorly with
-    the number of qubits.
+---
+upgrade_quantum_info:
+  - |
+    Improved the performance of :meth:`.Statevector.expectation_value` for
+    all-identity Pauli operators by relying on the optimized general-case
+    implementation instead of a dedicated shortcut that scaled poorly with
+    the number of qubits.