prep 3.2.0 (sigstore#1094)

prep 3.1.0 (sigstore#1079)

sigstore: 3.0.0 (sigstore#1021)

Signed-off-by: William Woodruff <william@trailofbits.com>

sigstore: 3.0.0rc2 (sigstore#1005)

Signed-off-by: Facundo Tuesca <facundo.tuesca@trailofbits.com>

sigstore: 3.0.0rc1 (sigstore#998)

Signed-off-by: William Woodruff <william@trailofbits.com>

pyproject: bump protobuf specs (sigstore#943)

* pyproject: bump protobuf specs

Signed-off-by: William Woodruff <william@trailofbits.com>

* pyproject: loosen constraint

Signed-off-by: William Woodruff <william@trailofbits.com>

* CHANGELOG: record change

Signed-off-by: William Woodruff <william@trailofbits.com>

* CHANGELOG: prep 2.1.3

Signed-off-by: William Woodruff <william@trailofbits.com>

* sigstore: 2.1.3

Signed-off-by: William Woodruff <william@trailofbits.com>

---------

Signed-off-by: William Woodruff <william@trailofbits.com>

CHANGELOG: 2.1.2

Signed-off-by: William Woodruff <william@trailofbits.com>

CHANGELOG: record changes for 2.1.1

Signed-off-by: William Woodruff <william@trailofbits.com>