Pin regctl installer to v0.1.0 release

Author: Wuodan

.github/actions/multiarch-image-build-sign-provenance/action.yml

@@ -40,7 +40,7 @@ runs:
       uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22  # v4.1.0
 
     - name: Install regctl
-      uses: regclient/actions/regctl-installer@9f6c88d6bc9e9d8416282b1f88be43758b0d066a  # main
+      uses: regclient/actions/regctl-installer@1b705e32d40851370799ea5814e83d0a5f6a70dc  # v0.1.0
 
     - name: Read image platform digest (amd64)
       id: platform-digest-amd64

.github/workflows/multiarch-image-build-sign-provenance-SLSA.yml

@@ -132,7 +132,7 @@ jobs:
         uses: slsa-framework/slsa-verifier/actions/installer@ea584f4502babc6f60d9bc799dbbb13c1caa9ee6  # v2.7.1
 
       - name: Install regctl
-        uses: regclient/actions/regctl-installer@9f6c88d6bc9e9d8416282b1f88be43758b0d066a  # main
+        uses: regclient/actions/regctl-installer@1b705e32d40851370799ea5814e83d0a5f6a70dc  # v0.1.0
 
       - name: Verify and attest image (amd64)
         uses: ./.github-actions/.github/actions/image-cosign-verify

.github/workflows/multiarch-image-build-sign-provenance.yml

@@ -54,7 +54,7 @@ jobs:
         uses: sigstore/cosign-installer@ba7bc0a3fef59531c69a25acd34668d6d3fe6f22  # v4.1.0
 
       - name: Install regctl
-        uses: regclient/actions/regctl-installer@9f6c88d6bc9e9d8416282b1f88be43758b0d066a  # main
+        uses: regclient/actions/regctl-installer@1b705e32d40851370799ea5814e83d0a5f6a70dc  # v0.1.0
 
       - name: Read image platform digest (amd64)
         id: platform-digest-amd64